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Force Calculator
Enter mass and acceleration to get force in newtons.
Force
—
F = m × a.
| Pounds-force | — |
|---|---|
| Mass | — |
| Acceleration | — |
| — |
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Enter your figures above to see the step-by-step working.
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How the Force Calculator Works
Newton’s second law says force equals mass times acceleration: F = ma. A 10 kg mass accelerating at 9.8 m/s² (Earth’s gravity) experiences 98 newtons of force — its weight. Enter mass in kilograms and acceleration in metres per second squared to get the force in newtons, and in pounds-force.
One newton is the force that accelerates one kilogram at one metre per second squared. Use g = 9.8 m/s² for the acceleration to get an object’s weight.
force = mass × acceleration
Frequently Asked Questions
What is the formula for force?
Newton’s second law: force equals mass times acceleration, F = ma.
What is a newton?
The SI unit of force — the force needed to accelerate one kilogram at one metre per second squared. It’s about 0.225 pounds-force.
How do I find weight from mass?
Multiply the mass by gravity (9.8 m/s²). A 10 kg mass weighs about 98 N.
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