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Force Calculator (F = m × a)

Find force from mass and acceleration.

Last updated: 25 Aug 2026

Quick answer

Newton's second law gives force = mass × acceleration. For example, 10 kg at 2 m/s² is 20 newtons. Enter mass and acceleration above.

Find force using Newton's second law: F = m × a. Mass in kg and acceleration in m/s² give force in newtons.

How to calculate force

  1. 1 Enter the mass in kg.
  2. 2 Enter the acceleration in m/s².
  3. 3 We compute F = m × a.

Frequently asked questions

What is the force formula?
Force (newtons) = mass (kg) × acceleration (m/s²).
What is 1 newton?
The force to accelerate 1 kg at 1 m/s².
How do I find mass or acceleration?
Rearrange: mass = force ÷ acceleration; acceleration = force ÷ mass.

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