Physics Force: F = ma in Plain Numbers
Newton's second law links force, mass, and acceleration in one multiplication. This calculator does that multiplication and shows it.
What is the Physics Force Calculator?
Enter mass in kilograms and acceleration in metres per second squared. The tool multiplies them for force in newtons. All physics tools here use standard textbook formulas, labelled as such.
How to use it
- Enter the values in the labelled units.
- Click Calculate Force.
- Read the result and its formula.
Worked example
A mass of 10 kg accelerating at 2 m/s^2 needs a force of 20 N.
What force accelerates 10 kg at 2 m/s^2?
20 newtons, from 10 times 2, by the formula F = ma.
Frequently asked questions
What units should I use?
Use the units on the labels (kg, m, s, N, J, W) so the formula's result comes out in standard units.
Is this exact?
The formula is standard textbook physics; real measurements carry their own errors, but the arithmetic is exact.