Everyday calculations
7 tools
3D print cost calculator
Add filament, electricity and an hourly machine allowance.
CalculatorWater hardness converter
Convert hardness as CaCO₃ between mg/L, German degrees and gpg.
CalculatorResin batch ratio
Split a target batch mass using the manufacturer’s weight ratio.
CalculatorBicycle gearing calculator
Compare gearing, distance per pedal turn and speed at a cadence.
CalculatorEC & ppm scale converter
Translate EC and the two common meter-display ppm conventions.
CalculatorConcrete volume calculator
Estimate rectangular slab volume and bags from the stated yield.
CalculatorBattery runtime estimate
Estimate ideal runtime from capacity and a two-state current profile.
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