Force Calculator

Find force, mass or acceleration from the other two with F = ma.

What Do You Want to Find?
Fractions and decimals both work.
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Result
Force
Mass
Acceleration
Work

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Newton’s Second Law

F = m × a   1 N = 1 kg·m/s²   1 lbf = 4.448222 N   1 kgf = 9.80665 N

F is the net force (all forces added together, with direction). Weight is a force: W = m × 9.80665 m/s².

Worked Example

Tips

To convert between force units only, use the force converter.