Force Calculator (F=ma)
Find force as mass times acceleration.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator applies Newton's second law, F = m × a, to find the force needed to accelerate a given mass, or to work backward and find acceleration or mass if the other two values are known. Force comes out in newtons when mass is in kilograms and acceleration in meters per second squared.
It's a staple of introductory physics homework, but the same formula is used by engineers sizing motors, brakes or structural supports, and by anyone estimating impact forces — for example how hard a falling object or a moving vehicle hits something.
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