What is the Force Calculator?
Calculate force from mass and acceleration with Newton's second law.
Enter mass and acceleration and the Force Calculator returns force and in kilogram-force. Results update as you type, and nothing you enter leaves your device.
How it is calculated
F = m × a
How to use it
- Enter mass in kg.
- Enter acceleration in m/s².
- Read force in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the Force Calculator use?
It uses: F = m × a.
What do I need to use the Force Calculator?
You need mass and acceleration. Sensible starting values are filled in so you can see how it works straight away.
Is the Force Calculator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.