Force Calculator
Apply Newton's second law (F = m × a). Solve for force, mass, or acceleration when you know the other two.
Inputs explained
- Solve for — Choose Force, Mass, or Acceleration as the unknown.
- Mass (kg) — The object's mass in kilograms (enter when not solving for mass).
- Acceleration (m/s²) — The rate of speed change in metres per second squared (enter when not solving for acceleration).
- Force (N) — The force in newtons (enter when not solving for force).
How to use it
- Fill in the fields above — each input has a hint describing exactly what to enter
- Press Calculate to get your result instantly, right on this page
- Copy the result, save the tool to favorites, or share and embed it anywhere
Understanding the result
Example: A 10 kg mass accelerating at 2 m/s² needs 20 N of force.
Frequently asked questions
Is the Force Calculator free to use? Yes — it is completely free, with no sign-up, no download and no usage limits. You can use it as often as you need.
Is my data private? Yes. The calculation runs entirely in your browser — the values you enter are never sent to our servers, stored or shared with anyone.
What information do I need? Just the following: Solve for, Mass (kg), Acceleration (m/s²), Force (N). Each field includes a hint explaining exactly what to enter.
Can I use it on my phone? Yes — the tool is fully responsive and works on any device, and the same calculator is available in the EasyWorkCalcs mobile app.
Privacy
Everything you enter into the Force Calculator is processed entirely in your browser. Nothing is uploaded, stored or shared — your data stays on your device.