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Physics & Science

Physics & Science calculators.

Nine calculators where the same equation runs in several directions. Leave any one field blank and it solves for that variable — you do not need a different page depending on which value you happen to be missing.

Motion & matter 3

Speed, Distance, TimeSolve for any one of the three from the other two, in metric or imperial units. DensityDensity, mass or volume — whichever you leave blank is the one it returns. Half-LifeQuantity remaining after decay, or an age worked back from what remains.

Solutions 3

Bench chemistry, with units handled for you — millilitres against litres, molar against millimolar.

MolarityMolarity, moles or volume for a solution, using the compound's molar mass. DilutionVolume of stock and diluent needed to reach a target concentration. pHConvert between pH and hydrogen ion concentration, with pOH and hydroxide shown too.

Forces & formulas 3

Physics equations with three or four variables — leave any one blank and it solves for that value from the rest.

Ohm's LawVoltage, current or resistance from the other two, with power derived automatically. ForceForce, mass or acceleration from the other two, using Newton’s second law. Ideal Gas LawPressure, volume, moles or temperature from the other three, using PV = nRT.

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