WEBCHATKIT INSTRUMENTS / 001
Exact math.
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A curated shelf of 312 focused calculators built for the practical jobs that generic calculators never quite understand. Built for engineers, makers, logistics planners, and craftspeople who need the real number now.
Explore 312 Tools ↘twice.
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Pallet Cube Utilization Calculator
Calculate the volumetric cube utilization percentage of cartons stacked onto a standard shipping pallet.
Open Calculator → 02Truck Load Utilization Calculator
Determine trailer cube efficiency and remaining cargo volume for full truckload (FTL) and LTL shipments.
Open Calculator → 03Pallet Positions Calculator
Estimate standard pallet storage positions in a warehouse zone based on square footage, aisle allowance, and racking tiers.
Open Calculator → 04Container Loading Calculator
Estimate total volume, carton capacity, and cube utilization for 20ft, 40ft, and 40ft High Cube shipping containers.
Open Calculator → 05Dimensional Weight Calculator
Calculate dimensional (DIM) weight for FedEx, UPS, DHL, and USPS to find billable shipping weight.
Open Calculator → 06Freight Class Density Calculator
Determine NMFC freight density (pcf) and estimated freight class (Class 50 to 500) for LTL pallet shipments.
Open Calculator → 07Carton Quantity Calculator
Calculate master cartons needed and leftover units based on total required inventory units and units per case.
Open Calculator → 08Case Pack Calculator
Work out inner packs, master case counts, and gross weight for retail and e-commerce distribution.
Open Calculator → 09Warehouse Space Calculator
Calculate total square footage and cubic storage needed for SKU inventory with aisle and handling clearance.
Open Calculator → 10Billable Utilization Calculator
Calculate professional services and agency billable utilization rate against standard available working hours.
Open Calculator →Baluster Spacing Calculator
Calculate uniform, code-compliant spacing for deck and staircase balusters (IRC 4-inch sphere rule).
Open Calculator → 02Stair Stringer Calculator
Calculate exact riser height, tread count, run length, and stringer board length for building code-compliant stairs.
Open Calculator → 03Tile Layout Calculator
Calculate total floor or wall tiles needed including grout joints and cutting waste factor.
Open Calculator → 04Tile Grout Calculator
Estimate grout dry mix weight (lbs or kg) needed for ceramic and porcelain tile joint coverage.
Open Calculator → 05Flooring Waste Calculator
Calculate exact gross square footage and box counts for hardwood, laminate, vinyl plank, or herringbone patterns.
Open Calculator → 06Paint Coverage Calculator
Estimate gallons or liters of paint needed based on wall area, doors/windows deduction, coats, and paint spread rate.
Open Calculator → 07Drywall Sheet Calculator
Calculate 4x8 or 4x12 drywall sheets, screws, and joint compound bucket requirements for walls and ceilings.
Open Calculator → 08Fence Picket Calculator
Calculate wood or vinyl fence pickets, posts, and horizontal rails for privacy and picket fences.
Open Calculator → 09Deck Board Calculator
Calculate number and linear feet of deck boards (5.5" standard) needed for a rectangular or custom deck.
Open Calculator → 10Roofing Shingle Calculator
Calculate roofing squares and 3-tab or architectural shingle bundles with pitch slope multiplier.
Open Calculator → 11Mulch Volume Calculator
Calculate cubic yards and 2 cu ft / 3 cu ft bagged mulch needed for garden beds and landscape borders.
Open Calculator → 12Topsoil Volume Calculator
Calculate topsoil cubic yards, metric cubic meters, and tonnage needed for lawn leveling and raised beds.
Open Calculator → 13Gravel Volume Calculator
Calculate crushed stone and gravel volume in cubic yards and tons for driveways, patios, and French drains.
Open Calculator → 14Concrete Footing Calculator
Calculate cubic yards and 60lb/80lb concrete premix bags for post holes, sonotubes, and strip footings.
Open Calculator → 15Picture Frame Miter Cut Calculator
Calculate outside and inside cut lengths for 45-degree miter picture frames with rabbet allowance.
Open Calculator →Reverse Sourdough Hydration Calculator
Calculate exact flour, water, starter, and salt weights starting from your desired total dough weight and hydration %.
Open Calculator → 02Baker’s Percentage Calculator
Convert any bread or pastry recipe into true baker’s percentages (flour = 100%) and scale up or down.
Open Calculator → 03Sourdough Starter Feeding Calculator
Calculate flour, water, and carryover starter needed for any feeding ratio (1:1:1, 1:2:2, 1:5:5) for a target levain.
Open Calculator → 04Curing Salt #1 & #2 Prague Powder Calculator
Calculate safe, precise grams of Prague Powder #1 (Cure #1) or #2 for dry cured, hot smoked, and brined meats (USDA standard 156 ppm nitrite).
Open Calculator → 05Pizza Dough Baker’s Calculator
Formulate Neapolitan, New York, or Detroit style pizza dough balls with exact flour, hydration, yeast, salt, and oil.
Open Calculator → 06Coffee Brew Ratio Calculator
Calculate coffee dose and brew water for Pour Over (V60, Chemex), French Press, AeroPress, and Espresso.
Open Calculator → 07Cold Brew Concentrate Calculator
Calculate coarse coffee grounds and water for strong cold brew concentrates (1:4, 1:5) or ready-to-drink (1:8).
Open Calculator → 08Yeast Pitch Rate Calculator
Calculate billion yeast cells needed and liquid starter / dry yeast packs for Ales, Lagers, and High-Gravity beers.
Open Calculator → 09Beer Recipe Scaling Calculator
Scale homebrew grain bills, hop additions, and mash volumes linearly between any two batch sizes and brew efficiencies.
Open Calculator → 10Mash Water Calculator
Calculate strike water volume, sparge water volume, grain absorption, and boil kettle volume for all-grain brewing.
Open Calculator → 11Brewing Strike Water Calculator
Calculate initial strike water temperature needed to hit your target mash rest temperature based on grain temp and ratio.
Open Calculator → 12Beer Carbonation & Priming Sugar Calculator
Calculate exact grams of corn sugar (dextrose), table sugar (sucrose), or DME for bottle conditioning and target CO2 volumes.
Open Calculator → 13Candle Fragrance Load Calculator
Calculate wax weight and fragrance oil (FO) weight in grams or ounces for any candle container batch and percentage load.
Open Calculator → 14Candle Wax Calculator
Convert container water weight or volume into required soy, coconut, or paraffin wax flakes weight (density factor 0.86).
Open Calculator → 15Soap Lye & Liquid Calculator
Calculate exact Sodium Hydroxide (NaOH) lye crystals and liquid water weight with chosen superfat discount %.
Open Calculator → 16Soap Oil Percentage Calculator
Calculate individual oil weights (Olive, Coconut, Palm, Castor, Shea) from formulation percentages and total mold capacity.
Open Calculator → 17Recipe Servings Scaling Calculator
Scale recipe ingredient quantities precisely when cooking or baking for larger gatherings or smaller dinner parties.
Open Calculator → 18Quilt Backing Fabric Calculator
Calculate yards of backing fabric needed for standard 42-44" fabric or 108" wide quilt backing with overage allowance.
Open Calculator → 19Fabric Yardage Calculator
Calculate total running yards or meters of fabric for multiple pattern pieces, drapery, and upholstery projects.
Open Calculator → 20Sewing Pleat Calculator
Calculate knife pleat, box pleat, and accordion pleat width, spacing, and required flat fabric length.
Open Calculator → 21Laser Kerf Compensation Calculator
Determine laser beam kerf width and exact offset contour values for tight press-fit and finger tenon joints in plywood and acrylic.
Open Calculator →Pet Food Cost Calculator
Compare daily, monthly, and annual dog and cat food expenses across dry kibble bag sizes, canned food, and raw diets.
Open Calculator → 02Aquarium Water Volume Calculator
Calculate true gross and net usable water volume in US Gallons and Liters for rectangular, bowfront, and cube tanks.
Open Calculator → 03Aquarium Stocking Calculator
Calculate safe aquarium bioload and stocking levels based on net water volume, filtration capacity, and fish body mass.
Open Calculator → 04Aquarium Plant Nutrient Dosing Calculator
Calculate exact target PPM and dry salt fertilizer mass (KNO3, KH2PO4, K2SO4, CSM+B) for Estimative Index (EI) planted aquariums.
Open Calculator → 05Aquarium Salt Calculator
Calculate tablespoons and grams of non-iodized aquarium salt for freshwater disease dips, ich treatment, and general tonic.
Open Calculator → 06Pond Volume Calculator
Estimate total water gallons and cubic meters for irregular and rectangular backyard fish and koi ponds.
Open Calculator → 07Pond Liner Size Calculator
Calculate EPDM rubber pond liner roll dimensions including maximum depth and anchor shelf overlap margins.
Open Calculator → 08Fertilizer Blend Calculator
Calculate weight of single-source fertilizers (Urea 46-0-0, DAP 18-46-0, Potash 0-0-60) to achieve target custom N-P-K blend.
Open Calculator → 09NPK Fertilizer Calculator
Calculate exact pounds of bagged fertilizer needed per 1,000 sq ft based on target Nitrogen application rate.
Open Calculator → 10Soil Amendment Calculator
Calculate compost, biochar, or peat moss amendment volume needed to raise soil organic matter (SOM) percentage.
Open Calculator → 11Seed Spacing Grid Calculator
Calculate total seed count, plant yield, row count, and spacing grid for raised bed and in-ground crops.
Open Calculator → 12Garden Bed Soil Calculator
Calculate raised bed soil mix (Mel's Mix 1/3 compost, 1/3 peat, 1/3 vermiculite) volume in cubic feet, yards, and bags.
Open Calculator → 13Irrigation Flow Rate Calculator
Calculate total drip zone water consumption in Gallons Per Hour (GPH) and Gallons Per Minute (GPM) against municipal supply limits.
Open Calculator → 14Compost Carbon Nitrogen Ratio Calculator
Calculate overall C:N ratio for combining "Browns" (carbon-rich wood chips, leaves) and "Greens" (nitrogen-rich food scraps, manure) for optimal 30:1 hot composting.
Open Calculator → 15Chicken Flock Feed Cost Calculator
Calculate monthly feed consumption and cost per egg produced for backyard laying hens and meat birds.
Open Calculator →LED Current Limiting Resistor Calculator
Calculate exact series current-limiting resistor resistance (Ohms) and power dissipation rating (Watts) for LEDs.
Open Calculator → 02Voltage Divider Calculator
Calculate output voltage (Vout), division ratio, and quiescent current for two-resistor voltage divider networks.
Open Calculator → 03Battery Runtime Calculator
Estimate battery operating runtime hours under continuous DC load considering Peukert effect and depth of discharge (DoD).
Open Calculator → 04Solar Panel String Sizing Calculator
Calculate max and min series panels per string to match MPPT solar charge controller voltage and low-temperature Voc limits.
Open Calculator → 05Solar Battery Bank Sizing Calculator
Calculate usable kWh and Amp-Hour (Ah) battery bank storage needed for off-grid homes and RVs with days of autonomy.
Open Calculator → 06Wire Gauge Voltage Drop Calculator
Calculate voltage drop percentage, conductor resistance, and power loss for AWG copper wire runs (NEC 3% branch limit).
Open Calculator → 07Subpanel Wire Size & Distance Calculator
Determine feeder wire gauge (AWG/kcmil Copper or Aluminum) and conduit size for 50A, 60A, 100A subpanels with distance voltage drop.
Open Calculator → 08Sheet Metal Bend Allowance Calculator
Calculate bend allowance (BA), bend deduction (BD), and flat pattern layout length using material thickness and K-Factor.
Open Calculator → 09Minimum Bend Radius Calculator
Estimate minimum inside forming bend radius for sheet metals and hydraulic hoses without cracking or wall thinning.
Open Calculator → 10Timing Belt Length Calculator
Calculate standard pitch belt length and tooth count for GT2, HTD, and T5 belt pulley center-to-center transmissions.
Open Calculator → 11Pulley Ratio & RPM Calculator
Calculate driven RPM, speed reduction ratio, and output torque multiplication for V-belt and flat belt drive systems.
Open Calculator → 12Gear Ratio & Speed Calculator
Calculate gear ratio, output shaft speed, and torque output for spur, helical, bevel, and planetary gear sets.
Open Calculator → 13Shaft Speed Calculator
Calculate shaft rotational speed (RPM), surface linear speed (SFM / m/s), and angular velocity (rad/s).
Open Calculator → 143D Printing Filament Cost Calculator
Calculate exact material filament cost, electricity consumption, and total part production cost from slicer gcode weight.
Open Calculator → 153D Printing Material Volume Calculator
Convert 3D print mass into volumetric cubic centimeters (cm³) and linear meters of 1.75mm / 2.85mm filament based on polymer density (PLA, PETG, ABS, TPU).
Open Calculator → 163D Printing Bed Leveling Calculator
Convert probe mesh corner height variance (mm) into exact screw turn fractions (e.g. 1/4 turn CW / CCW on M3/M4 threads).
Open Calculator → 17CNC Feed and Speed Calculator
Calculate milling feed rate (IPM / mm/min), spindle RPM, and chip load for end mills cutting Aluminum, Hardwood, Acrylic, and Steel.
Open Calculator → 18Laser Cutting Material Cost Calculator
Calculate raw sheet utilization, cutting time cost, and unit production quote for CO2 and fiber laser cutting orders.
Open Calculator → 19Welding Heat Input Calculator
Calculate welding heat input in kJ/mm and kJ/in for SMAW, GMAW (MIG), GTAW (TIG), and SAW welding procedure specifications (WPS).
Open Calculator → 20Bolt Torque Calculator
Calculate recommended tightening torque (ft-lbs and Nm) for Grade 5, Grade 8, and Metric 8.8/10.9 bolts based on preload clamp force.
Open Calculator → 21Pipe Flow Rate Calculator
Calculate volumetric water flow rate in Gallons Per Minute (GPM) and Liters Per Second from inside pipe diameter and fluid velocity.
Open Calculator → 22Beam Deflection Calculator
Calculate maximum center deflection (inches/mm) and bending stress for a simply supported beam with center point load.
Open Calculator →Cycling Gear Ratio & Inches Calculator
Calculate gear ratio, gear inches, development meters, and speed at cadence for road, gravel, and fixed-gear bicycles.
Open Calculator → 02Cycling Speed and Cadence Calculator
Determine cycling speed in MPH and KM/H from pedaling cadence, gear tooth combination, and wheel rollout circumference.
Open Calculator → 03Treadmill Pace to Speed & Incline Calculator
Convert treadmill speed (MPH / km/h) into running pace (min/mile, min/km) and calculate outdoor equivalent pace with grade incline adjustments.
Open Calculator → 04Hiking Pace & Time (Naismith’s Rule) Calculator
Estimate total trail hiking duration using Naismith’s Rule based on horizontal trail distance, elevation gain, and pack weight.
Open Calculator → 05Swimming Pace Calculator
Convert swim split time and workout distance into split pace per 100 meters / 100 yards and project triathlon swim splits.
Open Calculator → 06Climbing Grade Conversion Calculator
Convert rock climbing and bouldering ratings between YDS (Yosemite 5.9 to 5.14), French Sport (6a to 9a), V-Scale (V0 to V17), and Font.
Open Calculator → 07Towing Capacity & Tongue Weight Calculator
Calculate safe trailer weight, required hitch tongue weight (10-15%), and verify truck payload (GVWR) margin before towing.
Open Calculator → 08Generator Fuel Consumption & Runtime Calculator
Calculate hourly fuel consumption (gallons/liters of gasoline, propane, or diesel) and total runtime based on generator load wattage.
Open Calculator →Final Grade Needed Calculator
Calculate the exact percentage score required on your final exam to earn your target overall grade in a course.
Open Calculator → 02Assignment Weight Calculator
Calculate how individual weighted homework assignments, quizzes, and lab scores impact your cumulative course average.
Open Calculator → 03Target GPA Goal Calculator
Calculate the semester GPA needed across upcoming credit hours to raise your cumulative GPA to your target goal.
Open Calculator →Wedding Alcohol & Drink Calculator
Calculate bottles of wine, champagne toast, beer cases, and liquor fifths needed for wedding receptions and open bars.
Open Calculator → 02Party Food Quantity Calculator
Calculate appetizer pieces, main meat pounds, side dish portions, and dessert counts for catering and buffet parties.
Open Calculator → 03Event Seating & Table Calculator
Calculate round (60", 72") and banquet rectangular tables, chairs, and required room floor area for receptions.
Open Calculator →Podcast Sponsorship CPM Calculator
Calculate sponsor ad revenue and campaign cost per episode for pre-roll, mid-roll, and post-roll host-read podcast ads.
Open Calculator → 02Affiliate Commission Calculator
Project gross affiliate sales, net commission earnings, and earnings-per-click (EPC) from traffic and conversion rates.
Open Calculator → 03Creator Sponsorship Rate Calculator
Calculate fair baseline brand deal sponsorship rates for YouTube integrated videos, dedicated videos, Instagram reels, and TikToks.
Open Calculator → 04Gross to Net Salary Paycheck Calculator
Calculate your take-home pay, federal income tax withholding, FICA (Social Security & Medicare), and state tax deductions from your gross salary.
Open Calculator →Calculadora de IVA incluido y desglosado
Separe el precio neto (base imponible), la cuota de IVA (21%, 10%, 4%) y el precio bruto en facturas comerciales o presupuestos.
Open Calculator → 02Calculadora de factura de luz
Estima el importe total del recibo eléctrico en España a partir de los kWh consumidos, término de potencia contratada, IEE e IVA.
Open Calculator → 03Calculadora de pintura por habitación
Calcula cuántos litros de pintura necesitas para pintar una habitación descontando puertas, ventanas y aplicando las manos necesarias.
Open Calculator → 04Calculadora de cloro para piscina
Calcula la dosis exacta de cloro (dicloro granular, tricloro o hipoclorito sódico líquido) para alcanzar el nivel óptimo de ppm según el volumen de agua.
Open Calculator → 05Calculadora de llenado de depósito de agua
Calcula el tiempo necesario para llenar o recargar un aljibe o depósito de agua a partir de su capacidad, nivel inicial y caudal de manguera o bomba.
Open Calculator → 06Calculadora de marco de plantación de tomate
Calcula el número de matas de tomate necesarias para tu huerto o invernadero según las dimensiones del bancal, separación entre líneas y distancia entre plantas.
Open Calculator → 07Calculadora de gasto gasolina moto
Estima el gasto de combustible por kilómetro, por viaje y al mes en tu moto o scooter según los km recorridos, consumo a los 100 y precio de la gasolina.
Open Calculator → 08Calculadora de coste por hora de trabajador
Calcula el coste real por hora efectiva que supone un empleado para la empresa en España, incluyendo salario bruto, cuota patronal de la Seguridad Social y horas efectivas anuales.
Open Calculator → 09Calculadora ahorro autoconsumo solar
Estima el ahorro económico anual y mensual de tu instalación de placas solares fotovoltaicas combinando autoconsumo directo y compensación de excedentes vertidos a red.
Open Calculator → 10Calculadora de rendimiento de aceite de oliva
Calcula cuántos litros y kilos de aceite de oliva virgen extra (AOVE) obtendrás a partir de los kilos de aceituna cosechados, rendimiento graso industrial y deducciones de maquila.
Open Calculator → 11Calculadora de Sueldo Bruto a Neto
Calcule su sueldo neto mensual y anual a partir del salario bruto, deduciendo retenciones de IRPF y cotizaciones a la Seguridad Social.
Open Calculator →Heizkostenabrechnung Rechner
Berechnen Sie Ihren verbrauchsabhängigen und flächenbezogenen Anteil an den Gesamtheizkosten nach deutscher Heizkostenverordnung (HeizkostenV).
Open Calculator → 02Balkonkraftwerk Ertrag Rechner
Berechnen Sie den jährlichen Solarstromertrag (kWh), Ihre Stromkostenersparnis und die Amortisationszeit für Ihr Balkonkraftwerk (600W / 800W).
Open Calculator → 03Estrich Mengenrechner
Berechnen Sie das benötigte Estrichvolumen (m³), das Trockenmörtel-Gewicht (kg) und die Sackanzahl für Zementestrich nach DIN 18560.
Open Calculator → 04Brennholz Raummeter Rechner
Rechnen Sie Brennholzmaße zwischen Festmeter (FM), Raummeter (RM / Ster) und Schüttraummeter (SRM) um und ermitteln Sie Gewicht und Heizwert.
Open Calculator → 05Regenwasserzisterne Größe Rechner
Dimensionieren Sie das optimale Speichervolumen Ihrer Regenwasserzisterne für Gartenbewässerung und Haustechnik nach DIN 1989.
Open Calculator → 06Gartenerde Mengenrechner
Berechnen Sie das Erdvolumen in Kubikmetern (m³), Litern und Säcken für Beete, Pflanzkübel und Hochbeete inklusive Setzungszuschlag.
Open Calculator → 07Fahrradanhänger Zuladung Rechner
Prüfen Sie die maximale Zuladung Ihres Fahrradanhängers und das zulässige System-Gesamtgewicht (ZGG) Ihres Fahrrads oder E-Bikes nach DIN EN 15918.
Open Calculator → 08Fenster U-Wert Rechner
Berechnen Sie den Gesamt-Wärmedurchgangskoeffizienten (Uw) Ihrer Fenster aus Glas-, Rahmen- und Randverbundwerten nach DIN EN ISO 10077-1.
Open Calculator → 09Salzrechner Fermentieren
Berechnen Sie die exakte Salzmenge in Gramm für Sauerkraut, Kimchi und Salzgurken mit Trockensalzung oder Salzlake nach Prozentmethode.
Open Calculator → 10Ausbildungsvergütung Netto Rechner
Berechnen Sie Ihr monatliches Nettogehalt als Auszubildender (Azubi) aus der Brutto-Ausbildungsvergütung nach Abzug aller Sozialabgaben und Lohnsteuer.
Open Calculator → 11Brutto-Netto-Gehaltsrechner
Ermitteln Sie Ihr monatliches Nettogehalt, Lohnsteuer, Solidaritätszuschlag und Sozialversicherungsbeiträge nach § 39b EStG.
Open Calculator →Calculateur de récupération d’eau de pluie
Estimez le volume d’eau de pluie récupérable sur votre toiture et dimensionnez le volume idéal de votre cuve de stockage pour jardin et maison.
Open Calculator → 02Calculateur de consommation de granulés
Estimez la consommation de pellets en kg, sacs de 15 kg et tonnes, ainsi que le coût de chauffage annuel pour votre poêle ou chaudière à granulés.
Open Calculator → 03Calculateur de papier peint avec raccord
Calculez le nombre précis de rouleaux de papier peint nécessaires pour une pièce en tenant compte de la hauteur du raccord (sauté ou droit) et des ouvertures.
Open Calculator → 04Calculateur de joint de carrelage
Calculez la quantité exacte de mortier de jointoiement en kilogrammes et en sacs selon le format des carreaux, la largeur et la profondeur du joint.
Open Calculator → 05Calculateur d’hydratation du pain
Ajustez l’eau, la farine et le levain naturel pour atteindre le taux d’hydratation cible exact de vos baguettes, pains de campagne et pâtes à pizza.
Open Calculator → 06Calculateur d’hydratation du substrat de champignons
Calculez la masse d’eau exacte à ajouter à un substrat sec (paille, sciure, granulés de bois, coco) pour atteindre la capacité au champ idéale (60% à 65%).
Open Calculator → 07Calculateur de développement vélo
Calculez le développement en mètres par tour de pédale, le braquet et la vitesse en km/h à votre cadence cible selon la taille de roue et les pignons.
Open Calculator → 08Calculateur de tarif horaire micro-entreprise
Déterminez votre taux horaire et votre TJM (Taux Journalier Moyen) pour générer le revenu net désiré après déduction des cotisations URSSAF et des frais.
Open Calculator → 09Calculateur de volume de bassin de jardin
Calculez le volume d’eau de votre bassin de jardin en m³ et en litres (rectangulaire, circulaire ou forme libre) et dimensionnez la pompe de filtration.
Open Calculator → 10Calculateur d’amendement du sol
Calculez la dose d’amendement organique (compost mûr, fumier, chaux magnésienne, biochar) en kg, litres et sacs pour régénérer la fertilité de votre potager.
Open Calculator → 11Calculateur de Salaire Brut en Net
Convertissez votre salaire brut en net mensuel et annuel selon votre statut (salarié cadre, non-cadre, fonction publique) et estimez le prélèvement à la source.
Open Calculator →Calculadora de queda de tensão elétrica
Calcule a queda de tensão elétrica (em Volts e %) em condutores de cobre ou alumínio conforme a norma ABNT NBR 5410 e dimensione a seção correta do cabo.
Open Calculator → 02Calculadora de blocos de concreto
Estime a quantidade exata de blocos de concreto e sacos de argamassa para paredes e muros, deduzindo aberturas e aplicando margem técnica de quebra.
Open Calculator → 03Calculadora de telhas por metro quadrado
Calcule a quantidade de telhas cerâmicas ou de concreto para sua cobertura a partir da área de projeção horizontal e da inclinação percentual do telhado.
Open Calculator → 04Calculadora de produtos para piscina
Calcule a dosagem precisa de cloro (dicloro, tricloro, hipoclorito), elevador de pH (barrilha) ou algicida em gramas ou ml de acordo com o volume da piscina.
Open Calculator → 05Calculadora de geração solar
Estime a geração média mensal de energia fotovoltaica (kWh/mês) e a economia financeira anual em Reais com base na irradiação solar da sua região (HSP).
Open Calculator → 06Calculadora de rendimento de mandioca
Calcule o rendimento industrial e artesanal na produção de farinha de mandioca torrada, fécula, polvilho doce e polvilho azedo a partir do peso de raiz colhida.
Open Calculator → 07Calculadora de preço de venda MEI
Calcule o preço de venda ideal para produtos ou serviços do Microempreendedor Individual (MEI) cobrindo custos, taxas de cartão, marketplaces e margem de lucro.
Open Calculator → 08Calculadora de volume de caixa d’água
Dimensione a capacidade ideal do reservatório e caixa d’água residencial segundo a ABNT NBR 5626, garantindo autonomia de abastecimento para 2 dias de consumo.
Open Calculator → 09Calculadora de conversão alimentar frango
Calcule a Conversão Alimentar (CA), o Ganho de Peso Diário (GPD) e o Índice de Eficiência Produtiva (IEP) para lotes de frangos de corte com padrões Embrapa.
Open Calculator → 10Calculadora de salmoura para azeitonas
Calcule o peso exato de sal marinho grosso e água para preparar a salmoura de curtimento e conservação de azeitonas de mesa verdes ou pretas.
Open Calculator → 11Calculadora de Salário Líquido CLT
Calcule o valor exato do salário líquido na carteira assinada CLT, descontando a tabela progressiva do INSS e a retenção do IRPF.
Open Calculator →Calcolatore dimensionamento termosifoni
Calcola il fabbisogno termico della stanza in Watt e determina il numero esatto di elementi del termosifone (alluminio, ghisa o acciaio) secondo la norma UNI EN 442.
Open Calculator → 02Calcolatore consumo pellet stufa
Stima il consumo orario, i sacchi da 15 kg e la spesa stagionale per la tua stufa o caldaia a pellet in base alla potenza, al rendimento e alle ore di accensione.
Open Calculator → 03Calcolatore quantità intonaco
Calcola il numero di sacchi da 25 kg di intonaco premiscelato (base calce/cemento o gesso) e i quintali necessari per intonacare pareti interne ed esterne.
Open Calculator → 04Calcolatore salamoia olive
Calcola il peso esatto di sale marino grosso e acqua per preparare la salamoia di conservazione e fermentazione delle olive da tavola verdi e nere all’italiana.
Open Calculator → 05Calcolatore resa uva vino
Calcola i litri di mosto fiore, il vino netto svinato e il numero di bottiglie da 0,75 L ricavabili dal peso delle uve vendemmiate nel rispetto dei limiti DOC/DOCG.
Open Calculator → 06Calcolatore potenza caldaia casa
Determina la potenza termica nominale (kW) necessaria per la caldaia a condensazione o pompa di calore per riscaldamento ambiente e acqua calda sanitaria (ACS).
Open Calculator → 07Calcolatore costo viaggio moto
Calcola il costo totale di un itinerario in moto comprensivo di consumo benzina verde, pedaggi autostradali (Telepass Classe A), usura pneumatici e quota passeggero.
Open Calculator → 08Calcolatore telo ombreggiante pergola
Calcola i metri quadri di tessuto o rete ombreggiante per pergolati, gazebo e terrazzi considerando risvolti perimetrali, effetto ondeggiante e occhielli di fissaggio.
Open Calculator → 09Calcolatore lievitazione impasto pizza
Calcola la grammatura esatta di lievito di birra fresco o secco, acqua e sale per impasti pizza verace o in teglia in funzione delle ore e della temperatura di lievitazione.
Open Calculator → 10Calcolatore scorporo IVA
Scorpora l’IVA dal totale lordo di scontrini, fatture e parcelle per ottenere l’imponibile netto e l’imposta esatta con le aliquote ordinarie e ridotte (22%, 10%, 5%, 4%).
Open Calculator → 11Calcolatore Stipendio da Lordo a Netto
Calcola lo stipendio netto mensile e annuale partendo dalla RAL (Retribuzione Annua Lorda), con contributi INPS, scaglioni IRPEF e detrazioni da lavoro dipendente.
Open Calculator →Beton hacmi hesaplama
Temel, döşeme, kiriş ve perde beton dökümleri için gereken hazır beton hacmini (m³) ve mikser sefer sayısını fire payıyla hesaplayın.
Open Calculator → 02İnşaat demiri ağırlık hesaplama
Betonarme donatı demiri çapı (Ø8-Ø32 mm), boyu ve adedine göre toplam metraj, kilogram ve ton cinsinden ağırlığı hesaplayın.
Open Calculator → 03Doğalgaz faturası hesaplama
Sayaçtan okunan metreküp (m³) tüketimine göre düzeltme katsayısı, sistem kullanım bedeli ve KDV dahil tahmini doğalgaz faturanızı hesaplayın.
Open Calculator → 04Seramik yapıştırıcı hesaplama
Zemin ve duvar seramik, fayans veya granit döşemesi için gereken toz yapıştırıcı miktarını ve 25 kg torba sayısını hesaplayın.
Open Calculator → 05Sera naylonu hesaplama
Tünel ve beşik çatılı seralar için yay çevresi, alın kaplamaları ve toprağa gömme payı dahil sera naylonu ölçüsü ve rulo ağırlığını hesaplayın.
Open Calculator → 06Koyun yem maliyeti hesaplama
Koyun ve kuzu sürüsü için günlük kaba ve kesif yem tüketimini, 50 kg çuval ihtiyacını ve aylık toplam yem maliyetini hesaplayın.
Open Calculator → 07Güneş paneli üretim hesaplama
Güneş enerjisi santrali (GES) veya çatı panel gücüne göre Türkiye güneş radyasyon haritası verileriyle aylık ve yıllık elektrik üretimini hesaplayın.
Open Calculator → 08Araç yakıt maliyeti hesaplama
Gidilen mesafe, 100 km ortalama tüketim ve akaryakıt pompa fiyatına göre seyahat yakıt giderini, km başı maliyeti ve kişi başı ücreti hesaplayın.
Open Calculator → 09Arsa payı hesaplama
Tapu senedindeki arsa payı (pay/payda) ve ana taşınmaz parsel alanına göre bağımsız bölüme düşen net arsa metrekaresini hesaplayın.
Open Calculator → 10Turşu salamurası tuz hesaplama
Kornişon salatalık, lahana veya karışık turşular için erimeyi önleyen ideal kaya tuzu gramajını, içme suyu ve sirke oranlarını hesaplayın.
Open Calculator → 11Brütten Nete Maaş Hesaplama
Aylık brüt maaşınızdan SGK işçi payı (%14), işsizlik sigortası (%1), gelir vergisi ve asgari ücret istisnası düşülerek net maaşı hesaplayın.
Open Calculator →Kalkulator kosztów ogrzewania
Oblicz sezonowe i miesięczne koszty ogrzewania domu pompą ciepła, gazem, pelletem lub ekogroszkiem wg standardów Warunków Technicznych WT 2021.
Open Calculator → 02Kalkulator drewna opałowego
Przelicz metry przestrzenne (mp) drewna kominkowego i opałowego na metry sześcienne lite (m³), wagę w tonach i wartość opałową wg norm Lasów Państwowych.
Open Calculator → 03Kalkulator membrany dachowej
Oblicz zapotrzebowanie na wysokoparoprzepuszczalną membranę wstępnego krycia dachu, liczbę rolek 75 m² i naddatki na zakłady wg zaleceń Polskiego Stowarzyszenia Dekarzy.
Open Calculator → 04Kalkulator betonu na fundament
Oblicz objętość betonu towarowego (m³) i liczbę gruszek dla ław fundamentowych, stóp lub płyty fundamentowej z uwzględnieniem naddatku na nierówności wykopu.
Open Calculator → 05Kalkulator wapnowania gleby
Oblicz potrzebną dawkę wapna nawozowego (kredy nawozowej lub wapna tlenkowego) w kg na ar i tonach na hektar w oparciu o aktualne pH gleby i zalecenia IUNG.
Open Calculator → 06Kalkulator kosztu paszy dla kur
Oszacuj dzienne, miesięczne i roczne zapotrzebowanie na paszę dla kur niosek lub brojlerów, liczbę worków 25 kg oraz łączny budżet paszowy wg norm IZ-PIB.
Open Calculator → 07Kalkulator produkcji fotowoltaiki
Oblicz szacunkową produkcję energii elektrycznej (kWh) z instalacji fotowoltaicznej w Polsce w ujęciu miesięcznym i rocznym oraz oszczędności w net-billingu.
Open Calculator → 08Kalkulator ilości tynku na elewację
Oblicz ilość tynku strukturalnego (silikonowego, akrylowego - baranek 1.5 mm lub 2.0 mm), masę w kg i liczbę wiader 25 kg potrzebnych na elewację budynku.
Open Calculator → 09Kalkulator przełożeń rowerowych
Oblicz przełożenie napędu (gear ratio), drogę na jeden obrót korby w metrach (gear development) oraz prędkość jazdy przy danej kadencji pedałowania.
Open Calculator → 10Kalkulator solanki do kiszenia
Oblicz idealną wagę nieoczyszczonej i niejodowanej soli kamiennej do ogórków małosolnych, kiszonych, kapusty i buraków dla zachowania chrupkości przetworów.
Open Calculator → 11Kalkulator Wynagrodzeń Brutto Netto
Oblicz wynagrodzenie netto („na rękę”), składki ZUS (emerytalna, rentowa, chorobowa, zdrowotna NFZ) oraz zaliczkę na podatek dochodowy PIT.
Open Calculator →Fiets actieradius calculator
Bereken de realistische actieradius van je elektrische fiets (e-bike) op basis van accucapaciteit (Wh), ondersteuningsstand, gewicht en tegenwind.
Open Calculator → 02Warmtepomp stroomverbruik calculator
Bereken het jaarlijkse stroomverbruik (kWh), de elektriciteitskosten en de nettobesparing op aardgas van een hybride of all-electric warmtepomp.
Open Calculator → 03Regenton inhoud calculator
Bereken de ideale inhoud van een regenton of hemelwaterbuffer op basis van je dakoppervlak, Nederlandse regenbui-intensiteit en tuinbehoefte.
Open Calculator → 04Tuinaarde calculator
Bereken hoeveel m³ tuinaarde, potgrond of compost je nodig hebt voor borders en plantenbakken, inclusief inklinking en aantal zakken van 40 liter.
Open Calculator → 05Grindpad calculator
Bereken hoeveel grind of siersplit je nodig hebt in m³, tonnen en big bags voor tuinpaden, opritten of borders, met of zonder grindmatten.
Open Calculator → 06Tegellijm calculator
Bereken het benodigde aantal zakken poederlijm (25 kg) of pastalijm op basis van het tegeloppervlak, kamvertanding en dubbele verlijming.
Open Calculator → 07Thuisbatterij terugverdientijd calculator
Bereken de terugverdientijd en het jaarlijkse rendement van een thuisaccu bij afbouw van de salderingsregeling en dynamische stroomtarieven.
Open Calculator → 08Fietsbelading calculator
Controleer of het totaalgewicht van fiets, berijder, kinderzitjes en fietstassen binnen het maximaal toegestane systeemgewicht blijft.
Open Calculator → 09Pekel calculator fermenteren
Bereken de exacte verhouding jodiumvrij zeezout voor het fermenteren van zuurkool, augurken of het traditioneel pekelen van haring.
Open Calculator → 10ZZP uurtarief calculator
Bereken een realistisch uurtarief en dagtarief als zzp’er op basis van je gewenste nettoloon, zakelijke kosten, belastingen en declarabiliteit.
Open Calculator → 11Bruto Netto Salaris Calculator
Bereken uw nettoloon per maand en per 4 weken uit het brutoloon, inclusief loonheffing, algemene heffingskorting en arbeidskorting.
Open Calculator →Kalkulator harga jual UMKM
Hitung harga jual produk UMKM yang tepat setelah memperhitungkan HPP, kemasan, biaya admin marketplace (Shopee, Tokopedia, TikTok Shop), PPh final 0,5%, dan target margin keuntungan.
Open Calculator → 02Kalkulator kebutuhan material bangunan
Hitung estimasi kebutuhan bata merah, bata ringan (hebel), atau batako, beserta jumlah zak semen mortar dan pasir pasang untuk dinding rumah dengan potongan pintu/jendela.
Open Calculator → 03Kalkulator volume beton cor
Hitung volume beton cor dak pelat lantai, balok, kolom, atau sloof pondasi dalam meter kubik (m³), kebutuhan armada truk molen readymix, atau takaran adukan manual SNI K-225.
Open Calculator → 04Kalkulator kebutuhan benih padi
Hitung estimasi kebutuhan benih padi bersertifikat (kg) dan jumlah kantong benih berdasarkan luas areal sawah, sistem tanam (Jajar Legowo, Tegel, SRI), dan daya berkecambah.
Open Calculator → 05Kalkulator biaya pakan ayam
Hitung konsumsi pakan harian, total sak pakan (50 kg), perkiraan anggaran biaya pakan, dan analisis FCR untuk ayam broiler pedaging, layer petelur, atau ayam kampung.
Open Calculator → 06Kalkulator pakan ikan kolam
Hitung takaran pakan harian kolam (kg), pembagian porsi pakan per jadwal pemberian, dan stok karung pelet berdasarkan biomassa ikan dan feeding rate (persentase pakan harian).
Open Calculator → 07Kalkulator biaya listrik token
Estimasi pemakaian energi listrik prabayar (token PLN) bulanan dalam kWh dan Rupiah berdasarkan daya peralatan rumah tangga, golongan tarif PLN, dan pajak penerangan jalan (PPJ).
Open Calculator → 08Kalkulator berat volume pengiriman
Bandingkan berat timbangan aktual dengan berat volumetrik paket pengiriman (JNE, J&T, SiCepat, Wahana, Cargo) untuk mengetahui berat yang ditagihkan (chargeable weight).
Open Calculator → 09Kalkulator kebutuhan cat tembok
Hitung kebutuhan liter cat tembok interior/eksterior (2 lapis) dan primer alkali sealer serta konversi ke jumlah galon (2,5 L) atau pail (20 L) dengan potongan pintu & jendela.
Open Calculator → 10Kalkulator rendemen minyak kelapa
Hitung estimasi volume (liter) dan bobot (kg) minyak kelapa murni (VCO) atau minyak goreng kelapa tradisional dari jumlah butir kelapa tua atau berat daging parut beserta ampas blondo.
Open Calculator → 11Kalkulator Gaji Bersih & Take Home Pay
Hitung gaji bersih (take home pay) bulanan setelah pemotongan PPh 21 skema TER (PP 58/2023) dan iuran wajib BPJS Ketenagakerjaan serta Kesehatan.
Open Calculator →ईंटों की संख्या कैलकुलेटर
दीवार की लंबाई, ऊंचाई और मोटाई (9 इंच या 4.5 इंच) के आधार पर दरवाजे-खिड़की की कटौती और टूट-फूट (वेस्टेज) जोड़कर आवश्यक ईंटों की सही संख्या निकालें।
Open Calculator → 02सीमेंट रेत अनुपात कैलकुलेटर
दीवार प्लास्टर (12mm/15mm) या चिनाई के लिए सीमेंट-रेत अनुपात (1:3 से 1:6) के आधार पर 50 किलो सीमेंट बोरी और रेत (घन फुट / ब्रास) की मात्रा निकालें।
Open Calculator → 03बीज दर कैलकुलेटर
एकड़, बीघा या हेक्टेयर में खेत के क्षेत्रफल और अंकुरण प्रतिशत के अनुसार गेहूं, धान, सरसों, चना, मक्का आदि फसलों के लिए प्रमाणित बीज की मात्रा (किलो) निकालें।
Open Calculator → 04खाद की मात्रा कैलकुलेटर
खेत में फसल के अनुशंसित N-P-K पोषण लक्ष्य के अनुसार नीम कोटेड यूरिया (45 किलो), डीएपी (50 किलो) और पोटाश (MOP) की आवश्यक बोरियों की संख्या निकालें।
Open Calculator → 05पशु चारा लागत कैलकुलेटर
दुधारू गाय व भैंस के लिए हरा चारा, सूखा भूसा और पशु आहार दाना के आधार पर दैनिक व मासिक चारा खर्च, दूध आमदनी और शुद्ध डेयरी लाभ निकालें।
Open Calculator → 06पानी की टंकी क्षमता कैलकुलेटर
भूमिगत हौद (अंडरग्राउंड वाटर टैंक) या छत की गोल सिंटेक्स टंकी की क्षमता (लीटर) और परिवार के सदस्यों के अनुसार जल भंडारण के बैकअप दिनों की गणना करें।
Open Calculator → 07सोलर पैनल बिजली उत्पादन कैलकुलेटर
छत पर लगे 1 kW से 5 kW रूफटॉप सोलर सिस्टम (पीएम सूर्य घर योजना) से दैनिक व मासिक बिजली उत्पादन (यूनिट/kWh), बिजली बिल बचत और आवश्यक छत क्षेत्रफल निकालें।
Open Calculator → 08गाड़ी माइलेज खर्च कैलकुलेटर
बाइक, स्कूटर, कार या सीएनजी वाहन के लिए प्रति किलोमीटर वास्तविक यात्रा खर्च (₹/किमी), दैनिक व मासिक यात्रा बजट और सवारी शेयरिंग खर्च निकालें।
Open Calculator → 09टाइल्स की संख्या कैलकुलेटर
कमरे की लंबाई-चौड़ाई के अनुसार फर्श और स्कर्टिंग के लिए आवश्यक टाइल्स की संख्या, कुल पेटी (बॉक्स) और 7% कटिंग वेस्टेज की सटीक गणना करें।
Open Calculator → 10दुकान लाभ मार्जिन कैलकुलेटर
किराना दुकान, वस्त्र, इलेक्ट्रॉनिक्स या हार्डवेयर व्यापार के लिए थोक खरीद मूल्य, छूट, भाड़ा और बिक्री मूल्य के आधार पर लाभ मार्जिन (%) और मार्कअप निकालें।
Open Calculator → 11इन-हैंड सैलरी कैलकुलेटर (Gross to Net Salary)
अपने मासिक ग्रॉस वेतन (सीटीसी) से पीएफ (EPF), प्रोफेशनल टैक्स (PT) और नए टैक्स स्लैब (Section 115BAC) के अनुसार शुद्ध इन-हैंड सैलरी की गणना करें।
Open Calculator →給与手取り計算機 (月給・年収シミュレーション)
額面給与（月給・年収）から厚生年金、健康保険料、雇用保険料、所得税、住民税を自動計算し、実際に手元に残る手取り額をシミュレーションします。
Open Calculator → 02畳からフローリング面積計算（必要枚数・平米換算）
和室の畳数（江戸間・京間・団地間・中京間）からフローリングの施工平米数、坪数、および必要ケース数（箱数・ロス率込み）を正確に計算します。
Open Calculator → 03障子紙必要量計算機（張替え本数・規格サイズ換算）
和室の障子戸の寸法（標準丈・丈長・欄間）と枚数から、市販の障子紙ロール（94cm×7.2m等）の必要本数と余り寸法を無駄なく算出します。
Open Calculator → 04襖紙必要枚数計算機（張替え枚数・予備紙・規格換算）
襖（標準間中・丈長・天袋・地袋）の枚数と面数（片面・両面）から、必要な襖紙の枚数、予備紙、および施工用のり必要量を算出します。
Open Calculator → 05漬物塩分濃度計算機（浅漬け・本漬け・塩分％）
野菜の正味重量と浸透水・調味液に対して、目的の漬物種類（浅漬け2%・白菜漬け3%・長期保存本漬け6%等）に応じた正確な粗塩重量(g)を計算します。
Open Calculator → 06梅干し塩分計算機（青梅・完熟梅・赤紫蘇分量・カビ防止）
生梅（完熟南高梅等）の重量から、失敗しない伝統塩分（18%）や減塩仕込み（10%〜15%）に必要な粗塩量、赤紫蘇の葉と紫蘇用塩、消毒用焼酎量を算出します。
Open Calculator → 07手作り味噌仕込み量計算機（大豆・麹歩合・塩分濃度・出来上がり量）
目標とする味噌の出来上がり量、麹歩合（米麹・麦麹の対大豆比率）、および目標塩分濃度（辛口〜甘口）から、乾燥大豆・米麹・食塩・種水の必要量を精密算出します。
Open Calculator → 08ぬか床塩分・足しぬか計算機（塩分濃度維持・水気調整）
ぬか床の総重量と現在の状態に合わせて、足しぬか（生ぬか・いりぬか）を行う際に加えるべき食塩量(g)と理想の塩分濃度（7〜8%）を維持するための計算を行います。
Open Calculator → 09水稲苗箱数計算機（田んぼ面積・反反歩・疎植/密苗対応）
水田の作付面積（反・10a・町歩・平米）と移植密度（坪株数）、育苗方式（慣行苗・疎植・密苗）から、必要な育苗箱枚数、乾籾種子量、および培土容量を計算します。
Open Calculator → 10籾摺り・精米歩留まり計算機（籾から玄米・白米換算・水分補正）
収穫した籾（生籾・乾燥籾）の重量から、籾摺り後の玄米収量（重量・俵数）、白米精米後の正味重量、ならびに副産物（籾殻・米ぬか）の発生量を精密に算出します。
Open Calculator → 11農薬・液肥希釈計算機（希釈倍率・散布面積・タンク容量）
散布対象の面積（a・反・平米）と規定の希釈倍率（500倍〜2000倍等）、動噴・背負いタンクの容量から、必要な総散布液量、原液所要量、および給水回数を計算します。
Open Calculator → 12水田施肥量計算機（基肥・穂肥・成分量から袋数換算・反反歩）
目標とする水田の窒素(N)・リン酸(P)・カリ(K)の純成分量（kg/10a）と水田面積から、購入する肥料現物の必要重量および20kg袋数を換算します。
Open Calculator → 13屋根の積雪荷重計算機（建築基準法施行令86条準拠・豪雪地域対応）
建築基準法施行令第86条に基づき、自治体指定の垂直積雪量(cm)、積雪の単位荷重(20〜30N/m²/cm)、屋根勾配による低減係数μbから、屋根にかかる積雪荷重(N/m²・kg/t)を算出します。
Open Calculator → 14雨樋排水能力計算機（設計降雨強度・屋根投影面積・竪樋サイズ選定）
屋根の水平投影面積と局所集中豪雨を想定した設計降雨強度（mm/h）から、瞬間流出雨水量を求め、適切な竪樋（たてどい）の本数や管径（60φ・75φ・角樋）の選定・安全余裕を判定します。
Open Calculator → 15井戸ポンプ全揚程・選定計算機（吸上揚程・押上揚程・配管損失）
浅井戸・深井戸の静止/動的水位からの吸込落差、蛇口までの押上高さ、配管摩擦損失水頭、末端所要圧力から「全揚程(m)」を計算し、適合するポンプ規格・モーター出力を判定します。
Open Calculator → 16浄化槽人槽算定計算機（建築用途・延床面積・JIS A 3302準拠）
日本産業規格「JIS A 3302（建築物の用途別による屎尿浄化槽の処理対象人員算定基準）」に基づき、住宅の延床面積や浴槽数、家族人数から法定の浄化槽人槽（5人槽・7人槽・10人槽）を判定します。
Open Calculator → 17薪ストーブ薪使用量計算機（暖房面積・シーズン束数・立米換算）
自宅の暖房面積、地域気候（寒冷地・温暖地）、1日の燃焼時間から、1冬（1シーズン）に消費する薪の総重量(kg・トン)、薪束数、および棚積み立米数（m³）を推計します。
Open Calculator → 18着物反物必要量・裁ち合わせ計算機（身長・裄丈・着尺換算）
和裁の寸法体系（鯨尺・曲尺・メートル）に基づき、着用者の身長、裄丈、身幅から、袷着物（長着）・羽織・単衣に必要な反物の長さ（丈・尺・寸およびメートル換算）と1反（約12m）の余裕度を算出します。
Open Calculator → 19盆栽鉢用土量・配合比計算機（鉢サイズ・赤玉土・桐生砂・底石）
盆栽鉢の形状（長方鉢・丸鉢・懸崖深鉢）と内寸寸法から総土壌容量（リットル）を計算し、樹種（松柏類・雑木花物）に応じた赤玉土、桐生砂、鹿沼土、底石（ゴロ土）の適正配合量を算出します。
Open Calculator → 20金継ぎ材料量計算機（割れ・欠け寸法から生漆・刻苧・金粉）
器のひび割れ全長(cm)や欠け部分の体積(mm³)から、本格本漆金継ぎに必要な生漆・麦漆・刻苧漆（こくそうるし）の目安量(g/ml)と、仕上げ蒔絵に使用する純金粉・銀粉の所要量を算出します。
Open Calculator → 21日本酒加水・アルコール度数希釈計算機（原酒度数・割水比率・目標度数）
原酒の仕込み量（升・リットル・四合瓶換算）と現在のアルコール度数から、市販酒の目標アルコール度数（15度等）に調整するために必要な仕込み水（割水）の正確な加水量(ml/L)と仕上がり総量を算出します。
Open Calculator →김치 절임 소금 계산기 (배추절임 소금물 농도·천일염량)
배추의 무게(kg)와 포기 수에 맞춰 아삭하고 무르지 않게 절이기 위한 최적의 소금물 농도(10~12%)와 천일염, 줄기 덧소금 분량을 계산합니다.
Open Calculator → 02벼 육묘상자 계산기 (논 면적·마지기·밀파/소식재배 모판수)
논 면적(마지기·평·ha)과 모기르기 방식(관행·어린모·밀묘소식재배)에 따라 필요한 육묘상자(모판) 개수와 소요 볍씨 종자량(kg)을 계산합니다.
Open Calculator → 03비닐하우스 비닐 계산기 (길이·폭·높이·원형단동 피복 규격)
단동 및 연동 비닐하우스의 동 길이, 폭, 동고(높이)로부터 아치 원호 피복 비닐의 규격 폭(m)과 롤 소요 길이, 마구리 마감 비닐량을 산출합니다.
Open Calculator → 04온돌 난방비 계산기 (평수·보일러 연료별·난방시간 비용 추정)
아파트 및 주택의 난방 평수, 보일러 가동 시간, 연료 유형(도시가스 LNG·기름보일러·지역난방)에 따른 일일 및 월간 예상 난방비용을 추정합니다.
Open Calculator → 05철근 중량 계산기 (규격 D10~D32·길이·본수·단위중량 KS D 3504)
한국산업표준(KS D 3504) 규격에 따라 D10부터 D32까지 이형철근의 공칭 단위무게, 정척 길이별 1본 무게, 수량에 따른 총 중량(kg·ton)을 계산합니다.
Open Calculator → 06타일 접착제 양 계산기 (압착시멘트·드라이픽스·에폭시 소요량)
타일 시공 면적(㎡)과 타일 규격(모자이크·300×600·600×600 포세린), 흙손 톱니 크기에 따른 타일 접착제(드라이픽스·압착시멘트) 소요량과 포대 수를 계산합니다.
Open Calculator → 07양식 사료계수(FCR) 계산기 (어류 증체량·사료급이효율·생산비)
넙치(광어), 조피볼락(우럭), 송어 등 수산양식에서 총 급이 사료량과 증체량을 바탕으로 사료계수(FCR), 사료효율(%), 1kg 증체당 투입 사료비를 분석합니다.
Open Calculator → 08주택용 태양광 자가소비 절감액 계산기 (한전 누진제·상계거래)
주택용 3kW 태양광 발전설비 설치 시, 월 발전량과 가정 내 자가소비율을 반영하여 한전 3단계 주택용 누진제 요금 절감액과 연간 경제성을 계산합니다.
Open Calculator → 09아파트 베란다·발코니 적재하중 계산기 (화단·수조·중량물 안전성 검토)
아파트 발코니(베란다)에 대형 어항(수조), 화단 흙, 스파욕조, 타일 시공 시 건축구조기준(KDS 41 12 00 활하중 300kgf/㎡)에 부합하는지 안전성을 검토합니다.
Open Calculator → 10전통 된장 소금물 염도 비율 계산기 (메주 무게·염도계 보미도·물 비율)
건조 메주의 무게에 따라 정월장·이월장·삼월장의 최적 소금물 염도(보메도 17~19°Bé)와 필요한 생수량, 간수 뺀 천일염의 정확한 무게를 계산합니다.
Open Calculator →حاسبة كمية ري النخيل (حساب احتياج النخلة اليومي من الماء)
حساب كمية مياه الري اليومية والشهرية اللازمة لنخيل التمر (باللتر/نخلة/يوم) بناءً على عمر النخلة، الموسم المناخي (صيف/شتاء)، ونوع التربة وكفاءة شبكة الري.
Open Calculator → 02حاسبة نقاطات الري بالتنقيط (حساب عدد النقاطات وتصريف الخطوط)
حساب إجمالي عدد نقاطات الري المطلوبة، معدل التدفق الكلي (لتر/ساعة ومتر مكعب/ساعة)، والوقت اللازم للري بحسب طول الخطوط والمسافة بين النقاطات.
Open Calculator → 03حاسبة تبريد البيت المحمي (حساب خلايا التبريد والمراوح CFM)
حساب سعة مراوح الشفط اللازمة (CFM ومتر مكعب/ساعة) ومساحة وسائد وخلايا التبريد الكرتونية (Pad Area) للبيوت المحمية في المناطق الحارة والجافة.
Open Calculator → 04حاسبة خلط البن العربي (نسب خلطة القهوة بالهيل والزعفران)
حساب الأوزان الدقيقة لمكونات خلطة القهوة السعودية والخليجية الأصلية (البن المحمص الشقراء/المتوسط، حبوب الهيل الأخضر، المسمار/القرنفل، الزعفران) لوزن محدد أو لعدد الدلات.
Open Calculator → 05حاسبة تكلفة علف الأغنام (حساب عليقة الشعير والبرسيم اليومية)
حساب الكميات اليومية والشهرية من الأعلاف المركزة والخشنة (شعير، برسيم، رودس، مكعبات علفية) والتكلفة المالية الإجمالية لقطيع الأغنام والمواشي حسب العملة المحلية.
Open Calculator → 06حاسبة مدة خزان المياه (حساب كفاية واستهلاك مياه الخزان بالأيام)
حساب عدد الأيام والساعات التي يكفي فيها خزان المياه العلوي أو الأرضي للمنزل في حالات انقطاع ضخ مياه الشبكة أو انتظار وايت/صهريج المياه بناءً على عدد الأفراد.
Open Calculator → 07حاسبة مضخة مياه بالطاقة الشمسية (حساب عمق البئر وقدرة الألواح)
حساب القدرة الحصانية للمضخة الغاطسة (HP)، القدرة الكهربائية بالكيلوواط (kW)، والقدرة الإجمالية لمصفوفة الألواح الشمسية (Wp) وفقاً لعمق البئر، الرفع الديناميكي، ومعدل الضخ المطلوب.
Open Calculator → 08حاسبة إنتاج وفرز التمور (حساب درجات الجودة وهدر التعبئة)
تقدير مخرجات فرز محاصيل التمور (سكري، خلاص، مجدول، صقعي) إلى درجات تصنيفية (VIP فاخر، نخب أول، نخب ثانٍ، تمر تصنيعي) واحتساب نسبة الهدر وأعداد الكراتين الجاهزة للتسويق.
Open Calculator → 09حاسبة ألواح الجبس بورد (حساب عدد الألواح والشاسيه والبراغي)
حساب عدد ألواح الجبسبورد القياسية (1.20×2.40م)، قطاعات الحديد المجلفن (أوميجا C، زوايا تثبيت L)، معجون الفواصل والبراغي اللازمة لتنفيذ الأسقف المستعارة والقواطع الجدارية.
Open Calculator → 10حاسبة كمية عجين الخبز العربي (حساب نسب الطحين والماء والكرات)
حساب مقادير العجين للخبز العربي المسطح (الخبز اللبناني، الكماج، الخبز البلدي، البيتا) بدقة بناءً على النسبة المئوية للخباز (Baker's Percentage) لتحديد الطحين والماء والخميرة والملح بحسب عدد الأرغفة.
Open Calculator →Máy tính lượng giống lúa (tính giống lúa sạ lan, sạ hàng, cấy máy)
Tính toán chính xác khối lượng hạt giống lúa cần chuẩn bị (kg) theo diện tích canh tác (sào Bắc Bộ, sào Trung Bộ, công Nam Bộ hoặc héc-ta), phương thức gieo (sạ lan, sạ hàng, cấy máy) và tỷ lệ nảy mầm.
Open Calculator → 02Máy tính lượng thức ăn tôm (tính thức ăn tôm thẻ chân trắng, tôm sú)
Tính toán khẩu phần thức ăn hàng ngày và chia theo cữ ăn cho tôm thẻ chân trắng hoặc tôm sú dựa trên mật độ thả, tỷ lệ sống ước tính, trọng lượng tôm (DOC / size con/kg) và tỷ lệ kiểm tra nhá.
Open Calculator → 03Máy tính lượng vôi ao cá (tính vôi khử phèn, xử lý nước, cải tạo ao)
Tính lượng vôi cần rải để khử phèn, nâng độ kiềm, ổn định pH nước và sát trùng đáy ao nuôi cá theo diện tích ao, độ sâu mực nước và loại vôi sử dụng (vôi nông nghiệp CaCO3, vôi nung CaO, Dolomite).
Open Calculator → 04Máy tính lượng phân cho cây cà phê (tính phân NPK mùa mưa, mùa khô)
Tính toán lượng phân bón NPK và phân hữu cơ cho vườn cà phê Robusta theo mật độ cây, năng suất mục tiêu (tấn nhân/ha), và mùa vụ bón phân (mùa khô đợt 1, đầu mùa mưa, giữa mùa mưa, cuối mùa mưa).
Open Calculator → 05Máy tính số tấm tôn lợp mái (tính diện tích mái dốc, khổ tôn, chồng mí)
Tính toán diện tích mái dốc thực tế, số lượng tấm tôn sóng (khổ tôn 1.07m hữu dụng 1.0m), chiều dài tấm tôn theo dốc xuôi, độ chồng mí an toàn và số lượng vít bắn tôn chống dột dột nước.
Open Calculator → 06Máy tính gạch và vữa xây tường (tính gạch ống 4 lỗ, gạch đặc, vữa mác 75)
Tính số viên gạch xây (gạch ống 4 lỗ 8x8x18cm hoặc gạch đặc), thể tích cát và xi măng làm vữa xây cho tường 10 (tường đơn) hoặc tường 20 (tường đôi) theo Định mức Bộ Xây dựng (Thông tư 12/2021/TT-BXD).
Open Calculator → 07Máy tính công suất điện mặt trời gia đình (tính số tấm pin, inverter bám tải)
Tính toán công suất hệ thống điện mặt trời mái nhà tối ưu (kWp), số lượng tấm pin quang điện (540W-580W), và số tiền điện tiết kiệm hàng tháng theo biểu giá điện sinh hoạt bậc thang của EVN.
Open Calculator → 08Máy tính thể tích bồn nước (tính dung tích bồn nước inox, bồn nhựa gia đình)
Tính dung tích bồn chứa nước sinh hoạt gia đình (Lít / m³) bằng inox hoặc bồn nhựa (Sơn Hà, Tân Á Đại Thành) dựa trên số lượng thành viên, mức dùng nước tiêu chuẩn và số ngày dự phòng cúp nước.
Open Calculator → 09Máy tính phối trộn phân sầu riêng (tính phân NPK nuôi đọt, làm bông, nuôi trái)
Tính toán khối lượng phân bón đơn (Đạm Urea, Lân DAP/Super Lân, Kali Clorua/Sulfate) hoặc NPK công thức chuyên dùng cho cây sầu riêng theo tuổi cây, số gốc và giai đoạn sinh trưởng quan trọng.
Open Calculator → 10Máy tính độ ẩm giá thể nấm (tính lượng nước trộn mùn cưa, rơm rạ trồng nấm)
Tính lượng nước cần bổ sung vào đống ủ nguyên liệu mùn cưa, rơm rạ hoặc bã mía để đạt độ ẩm tối ưu (62% - 65%) trồng nấm bào ngư (nấm sò), nấm linh chi, mộc nhĩ, tránh bị chua thối mốc.
Open Calculator →Utsädesmängdskalkylator (beräkna utsädesmängd kg per hektar för spannmål)
Beräkna exakt utsädesmängd i kg per hektar och totalt utsädesbehov i säckar för höstvete, vårkorn, havre och råg baserat på önskat antal groddplantor/m², tusenkornvikt (TKV), grobarhet och beräknad fältuppkomst.
Open Calculator → 02Snölast på tak kalkylator (beräkna snölast och bärighet enligt Boverkets EKS)
Beräkna dimensionerande snölast i kN/m² och total snövikt i ton på takytan enligt Boverkets konstruktionsregler (EKS 12 / SS-EN 1991-1-3) utifrån Sveriges snözoner (1.0 till 5.5 kN/m²), taklutning och formfaktor.
Open Calculator → 03Vedförbrukning kalkylator (beräkna energivärde kWh och volym för vedeldning)
Beräkna tillgänglig värmeenergi (kWh) och volymbehov för torr eldningsved i travat mått (m³t) eller stjälpt mått (m³s) för björk, ek, tall och gran baserat på fukthalt och kaminens verkningsgrad.
Open Calculator → 04Bastu uppvärmningstid kalkylator (beräkna tid och elförbrukning bastuaggregat)
Beräkna uppskattad uppvärmningstid i minuter, erforderlig aggregateffekt och elförbrukning för traditionell finsk/svensk bastu baserat på bastuvolym, oisolerade glas- och stenytor, omgivningstemperatur och måltemperatur.
Open Calculator → 05Grusmängd kalkylator (beräkna ton och kubikmeter grus till uppfart och gångar)
Beräkna nödvändig volym (m³) och vikt i ton för kross, bergskross, bärlager (0-32), slitlager (0-16 / 8-16) eller dekorationsgrus till garageuppfart, trädgårdsgångar och markstensunderlag inklusive packningsgrad.
Open Calculator → 06Växthus värmebehov kalkylator (beräkna effekt kW och värmekostnad för växthus)
Beräkna värmeförlust i Watt, dimensionerande värmeeffekt i kW och energikostnad för att hålla frostfritt eller driva upp plantor tidig vår i växthus med enkelglas, isolerglas eller kanalplast.
Open Calculator → 07Bärskörd sylt kalkylator (beräkna syltmängd och sockermängd för lingon, blåbär)
Beräkna exakt sockermängd (vanligt strösocker eller syltsocker med pektin), färdig syltmängd i liter och antal glasburkar för svensk bärskörd av lingon, blåbär, hallon, hjortron och jordgubbar.
Open Calculator → 08Panelåtgång kalkylator (beräkna löpmetrar ytterpanel, råspont och pärlspont)
Beräkna åtgång av löpmetrar (lm) och virkeskostnad för ytterpanel (enkelfasspont, fjällpanel, lockpanel), råspont för tak och golv, samt pärlspont för innerväggar med avdrag för fönster/dörrar och spilltillägg.
Open Calculator → 09Regnvattentunna storlek kalkylator (beräkna uppsamling av regnvatten från tak)
Beräkna hur mycket gratis regnvatten du kan samla upp från takytan per månad och regntillfälle, samt optimal storlek på regnvattentunna eller vattencistern för trädgårdsbevattning enligt SMHI:s nederbördsdata.
Open Calculator → 10Värmepump årsförbrukning kalkylator (beräkna elförbrukning och besparing SCOP)
Beräkna årlig elförbrukning i kWh och förväntad kostnadsbesparing för bergvärme, luft-vatten eller luft-luftvärmepump baserat på fastighetens energibehov, värmefaktorn SCOP och elpris enligt Energimyndigheten.
Open Calculator →Kalkulačka počtu střešních tašek (výpočet plochy střechy, sklonu a spotřeby tašek)
Výpočet skutečné plochy šikmé střechy, spotřeby střešních tašek na m² (pálená taška Tondach, betonová Bramac / KM Beta, bobrovka), prořezu a počtu palet pro novostavby a rekonstrukce podle ČSN 73 1901.
Open Calculator → 02Kalkulačka vápnění půdy (výpočet dávky vápence podle pH a druhu půdy)
Výpočet doporučené dávky vápenných hnojiv (mletý vápenec CaCO3, pálené vápno CaO, dolomitický vápenec s hořčíkem) v tunách na hektar podle aktuálního pH půdy a půdního druhu dle metodiky ÚKZÚZ.
Open Calculator → 03Kalkulačka objemu balíků sena (výpočet kubatury a uskladnění kulatých i hranatých balíků)
Výpočet geometrického objemu, celkové hmotnosti a potřebného skladovacího prostoru v seníku nebo pod plachtou pro válcové (kulaté) i hranaté balíky sena a slámy se zohledněním stohovacích mezer.
Open Calculator → 04Kalkulačka spotřeby pelet (výpočet roční spotřeby, počtu pytlů 15 kg a nákladů)
Výpočet předpokládané roční spotřeby certifikovaných dřevních pelet (ENplus A1) v tunách, počtu 15kg pytlů a celkových nákladů na otopnou sezónu podle výkonu kotle, tepelné ztráty domu a účinnosti.
Open Calculator → 05Kalkulačka postřiku vinice (výpočet dávky jíchy, koncentrace a chemických přípravků)
Výpočet množství postřikové jíchy (l/ha), dávky účinné látky (fungicidy proti padlí a plísni révové) a přesného odměření chemického přípravku do nádrže rosiče pro moravské a české vinice.
Open Calculator → 06Kalkulačka velikosti nádrže na dešťovou vodu (výpočet objemu pro dotační program Dešťovka)
Výpočet optimálního objemu podzemní akumulační nádrže na dešťovou vodu (v m³ a litrech) podle metodiky dotačního programu Nová zelená úsporám (Dešťovka), plochy střechy a ročního srážkového úhrnu.
Open Calculator → 07Kalkulačka fasádní barvy (výpočet spotřeby barvy, počtu nátěrů a kbelíků)
Výpočet potřebného množství fasádní barvy (silikonové, akrylátové nebo silikátové) v litrech, kilogramech a počtu balení (kbelíků) s ohledem na savost a hrubost omítky (břízolit, točená zrnitá, hladká).
Open Calculator → 08Kalkulačka sypaného a rovnaného dřeva (převodník PRMS, PRMR a plnometru m³)
Převodník měrných jednotek palivového dříví používaných v ČR: prostorový metr sypaný (PRMS), prostorový metr rovnaný (PRMR) a plnometr (plm / m³ čistého dřeva) s porovnáním férové ceny za jednotku.
Open Calculator → 09Kalkulačka nákladů na krmivo (výpočet krmné dávky a rozpočtu pro hospodářská zvířata)
Výpočet denní, měsíční a celoroční spotřeby krmiva a finančních nákladů pro malochovy a rodinné farmy v ČR: nosnice a drůbež, prasata ve výkrmu, ovce, kozy a skot podle zootechnických normativů VÚŽV.
Open Calculator → 10Kalkulačka průtoku čerpadla pro jezírko (výpočet výkonu čerpadla, obratu vody a ztrát)
Výpočet požadovaného reálného průtoku filtračního čerpadla (v l/hod a m³/hod) pro zahradní jezírka, koupací nádrže a chovná koi jezírka se zohledněním dopravní výšky k filtru nebo potůčku a ztrát v hadicích.
Open Calculator →Calculator număr baloți de fân (producție pășune, format balot și volum fânar)
Calculul producției totale de fân uscat la hectar, al numărului de baloți rotunzi (cilindrici) sau paralelipipedici (dreptunghiulari) și al spațiului necesar de depozitare în fânar sau șopron conform normativelor ASAS.
Open Calculator → 02Calculator cantitate sămânță de grâu pe hectar (normă de semănat, MMB și germinație)
Calculul exact al normei de semănat la grâul de toamnă (kg/ha) și al necesarului de saci de 25 kg sau big-bags de 500 kg pe baza densității optime (boabe germinabile/m²), masei a 1000 de boabe (MMB), purității și germinației INCS / MADR.
Open Calculator → 03Calculator tratament vie (doză fungicid, volum soluție l/ha și preparare atomizor)
Calculul volumului total de apă (l/ha), al cantității de produse de protecție a plantelor (fungicide și insecticide împotriva manei, făinării și putregaiului cenușiu) și al dozei exacte per rezervor de atomizor (ICDVV Valea Călugărească).
Open Calculator → 04Calculator amendamente calcaroase (corectare aciditate sol, doză CaCO3 și valoare de neutralizare)
Calculul dozei optime de amendamente calcaroase (carbonat de calciu măcinat, var ars CaO, dolomit) în tone pe hectar pentru corectarea pH-ului solurilor acide (luvosoluri, podzoluri) conform metodologiei ICPA București și OSPA.
Open Calculator → 05Calculator necesar țiglă acoperiș (suprafață desfășurată, pantă, consum țiglă și paleți)
Calculul suprafeței reale desfășurate a șarpantei în funcție de amprenta casei și panta acoperișului, consumul de bucăți pe m² (țiglă din beton Bramac, ceramică Tondach, solzi sau tablă tip țiglă), pierderile la dolii și numărul de paleți.
Open Calculator → 06Calculator consum peleți centrală (consum sezonier, număr saci 15 kg și cost încălzire)
Calculul consumului estimat de peleți de lemn (clasa ENplus A1) pe sezonul de încălzire, numărul de saci de 15 kg și costul total în lei în funcție de puterea cazanului, gradul de izolare al casei și randamentul instalației conform EN ISO 17225-2.
Open Calculator → 07Calculator pompă puț forat (înălțime manometrică totală HMT, debit și presiune rețea)
Calculul înălțimii manometrice totale de pompare (HMT în metri coloană de apă - mCA) și al debitului necesar pentru selectarea optimă a unei pompe submersibile din foraj sau fântână conform SR EN ISO 9906.
Open Calculator → 08Calculator consum tencuială (tencuială manuală sau mecanizată, grosime strat și saci)
Calculul consumului de tencuială uscată var-ciment sau ipsos în kilograme și număr de saci (25 kg sau 30 kg), al apei de amestec și al amorsei de aderență pentru pereți interiori și fațade conform SR EN 998-1.
Open Calculator → 09Calculator cost furaje animale (rație furajeră zilnică, specii de fermă și buget nutreț)
Calculul consumului zilnic, lunar și total de concentrate, uruială de cereale sau nutreț combinat și al costului hranei pentru păsări ouătoare, pui broiler, porci, ovine și bovine pe baza normativelor IBNA Balotești.
Open Calculator → 10Calculator producție panouri fotovoltaice (estimare lunară și anuală kWh în România)
Calculul producției anuale și lunare de energie electrică (în kWh) și al economiilor financiare generate de un sistem fotovoltaic rezidențial în România (programul AFM Casa Verde Fotovoltaice) în funcție de zona de radiație solară și randamentul PR.
Open Calculator →Kattolumikuorman laskuri (lumikuorma kN/m², katon kaltevuus, pudotusraja ja tonnit)
Laske katolle kertyneen lumen neliökuorma (kN/m²), kokonaispaino tonneina ja vertaa sitä Suomen viralliseen lumivyöhykkeen mitoituskuormaan Ympäristöministeriön ja Eurokoodi 1 (SFS-EN 1991-1-3) mukaisesti.
Open Calculator → 02Saunan polttopuun kulutuslaskuri (puukiukaan puunkulutus, heittokuutiot ja lämmityskerrat)
Laske puulämmitteisen saunakiukaan polttopuun kulutus lämmityskertaa kohden, kuukaudessa ja vuodessa heittokuutioina (i-m³) sekä pinokuutioina (p-m³) saunan koon ja puulajin mukaan.
Open Calculator → 03Polttopuun kuutiolaskuri (pinokuutio, heittokuutio, kiintokuutio ja energiasisältö kWh)
Muunna polttopuun mittayksiköt luotettavasti toisiinsa: heittokuutio (i-m³), pinokuutio (p-m³) ja kiintokuutio (k-m³) sekä selvitä polttopuuerän todellinen energiasisältö kilowattitunteina (kWh) Luonnonvarakeskuksen (Luke) kaavoilla.
Open Calculator → 04Marjasadon pakastustilan laskuri (mustikka, puolukka, hilla ja mansikka pakastusrasioina)
Laske puhdistetun marjasadon (mustikka, puolukka, lakka/hilla, vadelma, mansikka) tilavuus pakastusrasioina (litraa), rasioiden kappalemäärä ja tarvittava pakastimen nettotilavuus Marttaliiton ohjeiden mukaisesti.
Open Calculator → 05Kylvömäärälaskuri (kylvömäärä kg/ha, tavoitetiheys, TNP, itävyys ja suursäkit)
Laske kevät- ja syysviljojen (ohra, kaura, vehnä, ruis) optimaalinen hehtaarikohtainen kylvömäärä (kg/ha) ja tarvittavien 500/600 kg suursäkkien määrä tuhatjyvänpainon (TNP) ja itävyyden mukaan VYR:n ja Luken suosituksin.
Open Calculator → 06Kasvihuoneen lämmitystarvelaskuri (lämmitysteho kW, U-arvo ja yöpakkasten sähkökulut)
Mitoita harrastekasvihuoneen lämmityslaitteen teho (kW), lämmitysenergian kulutus kevään kylminä öinä ja sähkökustannukset katteen U-arvon (kennolevy, lasi, kausimuovi) ja pakkasasteiden mukaan.
Open Calculator → 07Kivituhkan ja soran menekkilaskuri (kulkuväylät, tiivistyshäviö 15%, tonnit ja kuutiot)
Laske pihatien, polun tai parkkipaikan kivituhkan (0-6 mm), kalliomurskeen ja sepelin menekki kuutioina (m³) ja tonneina ottaen huomioon tärytys- ja tiivistymishäviö (15%) Infra ry:n ohjeiden mukaisesti.
Open Calculator → 08Hirsiseinän puumenekkilaskuri (hirsikehikon juoksumetrit jm, hirsikerrat ja hukkavara)
Laske hirsisaunan, aitan tai hirsitalon seinien hirsikerrosten määrä, kokonaisjuoksumetrit (jm), hirsikehikon tilavuus kuutioina (m³) ja aukkovähennykset ikkunoille ja oville Hirsitaloteollisuus ry:n mitoitusnormein.
Open Calculator → 09Lämpöpumpun sähkönkulutuslaskuri (maalämpö, ilmavesi, ilmalämpöpumppu, SCOP ja säästö)
Laske maalämpöpumpun, ilmavesilämpöpumpun tai ilmalämpöpumpun vuotuinen sähkönkulutus (kWh), saavutettava energiasäästö ja vuotuinen rahallinen säästö euroina suhteessa sähkö- tai öljylämmitykseen Motivan kriteereillä.
Open Calculator → 10Kalalammen ruokintalaskuri (kirjolohi, karppi, veden lämpötila ja päivittäinen rehumäärä)
Laske puutarhalammen tai kotitarvekalanviljelyn (kirjolohi, karppi, siika) päivittäinen rehumäärä (kg/vrk ja g/vrk) kalabiomassan ja veden todellisen lämpötilan mukaan Luonnonvarakeskuksen (Luke) taulukoilla.
Open Calculator →เครื่องคำนวณผสมปุ๋ยใช้เอง (แม่ปุ๋ย NPK, ยูเรีย, แดป, ม็อบ และสารตัวเติม)
คำนวณน้ำหนักแม่ปุ๋ยเคมี 3 ชนิด (46-0-0 ยูเรีย, 18-46-0 แดป, 0-0-60 ม็อบ) และสารตัวเติม (ฟิลเลอร์) เพื่อผสมปุ๋ยสั่งตัดตามสูตร N-P-K ที่ต้องการสำหรับ 1 กระสอบ (50 กก.) หรือตามจำนวนที่กำหนด กรมวิชาการเกษตร.
Open Calculator → 02เครื่องคำนวณปริมาณเมล็ดพันธุ์ข้าวต่อไร่ (นาดำ, นาหว่านน้ำตม, นาหยอด)
คำนวณปริมาณเมล็ดพันธุ์ข้าวปลูก (กิโลกรัม) และจำนวนกระสอบตามขนาดพื้นที่ทำนา (ไร่-งาน) และวิธีปลูกข้าว (นาหว่านน้ำตม, นาดำ, นาหยอด, นาหว่านข้าวแห้ง) ตามคำแนะนำของกรมการข้าว.
Open Calculator → 03เครื่องคำนวณต้นทุนอาหารกุ้ง (กุ้งขาวแวนนาไม, FCR, อัตรารอด และต้นทุนต่อบ่อ)
คำนวณปริมาณอาหารกุ้งสำเร็จรูปตลอดรอบการเลี้ยง (กิโลกรัม), จำนวนกระสอบ 25 กก., ค่าสัมประสิทธิ์แลกเนื้อ (FCR) และต้นทุนค่าอาหารต่อบ่อสำหรับกุ้งขาวแวนนาไมหรือกุ้งกุลาดำ กรมประมง.
Open Calculator → 04เครื่องคำนวณปูนปรับสภาพบ่อปลา (ปรับ pH ดินก้นบ่อและน้ำ, โดโลไมท์, ปูนขาว)
คำนวณปริมาณปูนที่ต้องใช้หว่านปรับสภาพดินก้นบ่อหรือปรับค่าน้ำ (กิโลกรัมต่อไร่) เพื่อแก้ปัญหาน้ำเปรี้ยว ดินกรด และเพิ่มค่าความเป็นด่าง (Alkalinity) ตามมาตรฐานกรมประมง.
Open Calculator → 05เครื่องคำนวณอิฐบล็อกและปูนก่อ (สร้างผนัง, กำแพงบ้าน, ปูนก่อและทราย)
คำนวณจำนวนอิฐบล็อกมาตรฐาน (7×19×39 ซม.), อิฐมอญ หรืออิฐมวลเบา, จำนวนปูนซีเมนต์ก่อ (กระสอบ 50 กก.) และปริมาตรทรายหยาบ (คิว/ลบ.ม.) สำหรับงานก่อผนังและรั้วบ้าน มอก. 58-2560.
Open Calculator → 06เครื่องคำนวณแผ่นเมทัลชีทมุงหลังคา (จำนวนแผ่น, สกรูยึด, ครอบจั่ว และความยาว)
คำนวณจำนวนแผ่นเมทัลชีท (หน้ากว้างมาตรฐาน 760 มม.), ความยาวแผ่นรวมระยะยื่นชายคา, จำนวนสกรูยึดแผ่น และความยาวแผ่นครอบจั่วสำหรับหลังคาเพิงแหงนและหลังคาจั่ว มอก. 2228.
Open Calculator → 07เครื่องคำนวณปั๊มน้ำโซล่าเซลล์ (บ่อบาดาล, ระยะส่ง TDH, แผงโซล่าเซลล์และวัตต์)
คำนวณระยะส่งน้ำรวม (TDH - Total Dynamic Head), กำลังวัตต์ของปั๊มบาดาลหรือปั๊มหอยโข่ง DC/AC, จำนวนแผงโซล่าเซลล์ (Wp) และปริมาณน้ำที่สูบได้ต่อวันสำหรับพื้นที่เกษตรกรรม พพ. และ กฟภ.
Open Calculator → 08เครื่องคำนวณขนาดถังเก็บน้ำใช้ในบ้าน (สำรองน้ำประปา, จำนวนผู้อยู่อาศัย)
คำนวณขนาดความจุถังเก็บน้ำดีบนดินหรือใต้ดิน (ลิตร) ที่เหมาะสมสำหรับบ้านพักอาศัย สำรองน้ำใช้ยามฉุกเฉิน 2–3 วันตามอัตราการใช้น้ำจริงต่อคนต่อวันของการประปานครหลวงและการประปาส่วนภูมิภาค.
Open Calculator → 09เครื่องคำนวณความชื้นวัสดุเพาะเห็ด (ขี้เลื่อยยางพารา, ปริมาณน้ำเติม 60-65%)
คำนวณปริมาณน้ำสะอาดที่ต้องเติมลงในกองขี้เลื่อยไม้ยางพาราแห้ง (ลิตร) เพื่อปรับระดับความชื้นของวัสดุเพาะก้อนเชื้อให้อยู่ในเกณฑ์มาตรฐาน 60–65% พร้อมสัดส่วนอาหารเสริมรำละเอียด ยิปซัม และปูนขาว.
Open Calculator → 10เครื่องคำนวณระยะปลูกพริก (จำนวนต้นกล้าต่อไร่, ระยะระหว่างแถวและต้น)
คำนวณจำนวนต้นกล้าพริก (พริกขี้หนูสวน, พริกจินดา, พริกชี้ฟ้า, พริกยอดสน) ที่ต้องใช้ปลูกต่อไร่หรือพื้นที่แปลงตามระยะห่างระหว่างแถวและระยะห่างระหว่างต้น พร้อมหักพื้นที่ทางเดินและร่องน้ำ กรมส่งเสริมการเกษตร.
Open Calculator →/ OUR EDITORIAL METHOD
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