Force Calculator (F=ma)
Solve for force, mass or acceleration.
About this tool
Newton's second law relates force, mass and acceleration: F = m × a. Pick which value you want to solve for and enter the other two.
Key Features
- Solve for force, mass or acceleration
- Standard SI units (Newtons, kg, m/s²)
- Instant validation on invalid inputs
How to Use
- Choose which value to solve for.
- Enter the other two values.
- Click Calculate.
Benefits
- Check physics homework on Newton's laws
- Quick reference for basic mechanics problems
- Understand how force, mass and acceleration relate
Frequently Asked Questions
Standard SI units: Newtons (N) for force, kilograms (kg) for mass, and meters per second squared (m/s²) for acceleration.
No — a mass of 0 would make acceleration undefined (infinite) for any nonzero force, so the calculator requires mass above 0 when solving for acceleration.