What is the Force Calculator?
Newton’s second law says the net force on an object equals its mass times its acceleration: F = m × a. Choose which quantity you want, enter the other two and get the answer in newtons (and kN, kgf, lbf). Weight is a special case: W = m × g.
How to use the Force Calculator
- Choose force, mass or acceleration.
- Enter the other two values in SI units (kg, m/s², N).
- See conversions and the weight of the mass.
Units
1 N = 1 kg·m/s² · 1 kgf = 9.80665 N · 1 lbf = 4.448 N.
This Force Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech