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We've already made 100+ free tools. Scroll down to explore them.
What we've made
Trades & DIY
WoodCalc
Board feet, miter angles, dovetails, crown molding, wood shrinkage
5 toolsHomeCalc
Concrete, deck boards, tile, drywall, stair stringers
5 toolsCircuitCalc
Ohm's law, LED resistor, voltage divider, color codes, RC time
Garden & Animals
GardenCalc
Soil volume, mulch, plant spacing, fertilizer NPK, bed area
5 toolsBeeCalc
Varroa mites, hive population, honey yield, winter feed, nectar flow
5 toolsEquineCalc
Horse weight, hay rations, medication dosing, pasture acreage, body condition
Health & Fitness
RunCalc
Pace, race predictor, VO2max, heart rate zones, treadmill converter
5 toolsLiftCalc
One rep max, Wilks score, plate loading, volume, progressive overload
5 toolsBabyCalc
Due date, ovulation, fetal growth, pregnancy weight gain, conception
Food & Drink
CookCalc
Recipe scaler, grams to cups, serving adjuster, pan conversion, cost per serving
5 toolsBrewCalc
ABV, IBU bitterness, mash water, priming sugar, recipe scaling
Money & Business
BetCalc
Parlay payout, implied probability, Kelly criterion, arbitrage, hold %
5 toolsStatCalc
Sample size, confidence interval, p-value, chi-square, regression
5 toolsZakatCalc
Zakat, Murabaha, Sukuk yield, inheritance (Faraid), halal mortgage
Auto & EV
TireCalc
Tire size comparison, speedometer correction, offset, bolt pattern, load index
5 toolsAutoCalc
HP/torque, displacement, compression ratio, gear ratio, quarter-mile
5 toolsEVCalc
Charging time, cost, range impact, battery degradation, charger ROI
Science & Making
ChemCalc
Molarity, dilution (C1V1=C2V2), pH, stoichiometry, reaction yield
5 toolsPrintCalc
Filament usage, print cost, time estimator, layer height, infill strength
Sports
Music & Entertainment
How it works
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