Force Calculator
Calculate force, mass, or acceleration using Newton's second law of motion (F = ma). Enter any two values to compute the third.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator uses Newton's second law of motion (F = m × a) to compute any missing value. Enter any two of the three fields below, then click Calculate.
- Enter values in the Force (N), Mass (kg), and Acceleration (m/s²) fields. Leave exactly one field empty.
- Click "Calculate" or press Enter on your keyboard. The missing value will appear in green.
- Read the result — it shows the calculated value with its unit (N, kg, or m/s²) and the step-by-step formula used.
- All values must be in metric units (Newtons, kilograms, meters per second squared).
- Mass and acceleration cannot be zero when used as denominators.
- If you enter all three or only one value, an error message will guide you.
Notes:
Previous Results
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Frequently Asked Questions
Force is calculated using Newton's second law: F = m × a, where F is force in newtons, m is mass in kilograms, and a is acceleration in meters per second squared.
Enter any two values among force, mass, and acceleration. Leave the third field empty, then click Calculate. The missing value will be computed.
Force is in newtons (N), mass in kilograms (kg), and acceleration in meters per second squared (m/s²).