🔬ScienceUpdated March 2026

Free Force Calculator 2026

Calculate force, mass, or acceleration using F=ma. Free online physics calculator.

How to use this calculator

  1. 1Select what you want to calculate: force, mass, or acceleration.
  2. 2Enter the two known values.
  3. 3Click Calculate to get your result.
  4. 4View the explanation with the formula used.

Written by FreeToolCalc Team

Formulas based on standard financial/medical equations. Last updated: March 2026.

Understanding Force in Physics

Force is a vector quantity that causes an object to accelerate. According to Newton's Second Law, Force = Mass × Acceleration (F = ma).

Common Forces

  • Gravity: 9.8 m/s² on Earth
  • Friction: Opposes motion
  • Normal force: Perpendicular to surface
  • Tension: Pulling force via rope

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Frequently Asked Questions

What is Newton's Second Law?

Force equals mass times acceleration (F = ma). When a force acts on an object, it causes the object to accelerate.

What is the unit of force?

The SI unit of force is the Newton (N), which equals 1 kg⋅m/s².

How do I calculate force?

Multiply mass (in kg) by acceleration (in m/s²). For example, a 10 kg object accelerating at 5 m/s² experiences a force of 50 N.