Force Calculator
Free online Force Calculator.
Calculator
Formula: F = m × a
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Newton's Second Law: F = m x a, where F = force (Newtons), m = mass (kg), a = acceleration (m/s^2). Gravitational force: F = m x g, g = 9.81 m/s^2.
Example Calculations
Basic Force
Input: Mass: 10 kg, Acceleration: 5 m/s^2
Result: Force: 50 N
Gravitational Force
Input: Mass: 75 kg, gravity = 9.81 m/s^2
Result: Weight: 735.75 N (165.3 lbs)
Car Acceleration
Input: Mass: 1,500 kg, 0-60 in 6s (a=4.47 m/s^2)
Result: Force: 6,705 N
About This Calculator
Free online force calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our force calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
Newton second law?
F = ma. Force equals mass times acceleration.
Units of force?
SI: Newton (N) = 1 kg x 1 m/s^2. Imperial: pounds-force (lbf).
Calculate gravitational force?
F = mg. On Earth, g = 9.81 m/s^2. A 10kg object weighs ~98.1 N.
Mass vs weight?
Mass is matter amount (kg), constant everywhere. Weight is gravitational force (N), varies by location.
How does friction affect force?
Friction opposes motion. F_friction = mu x N. Net force = applied force minus friction.