kalkio

Physics and engineering formulas

Pick a topic and a formula, enter the values you know and leave the unknown empty. The formula is rearranged for you.

m/s
m
s
speed10.438413m/s
distance
100 m
time
9.58 s

v = s / t

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Calculator by Kalkio · kalkio.app

How to use the formulas

Every formula can be solved for any of its quantities. In F = m · a, for example, enter the force and the mass and leave acceleration empty: you get a = F / m. Units are shown next to each box, in SI (with a few handy exceptions such as kWh or rpm).

To convert units, such as bar to pascals, use the unit converter.

Common questions

How do I type very small or large numbers?

In scientific notation, e.g. 4.7e-6 means 4.7 · 10⁻⁶.

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