Physics Momentum Calculator
Calculate momentum from mass and velocity with p = mv.
Quick answer: enter your details below and click Calculate Momentum — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Enter the values in the labelled units.
- Click Calculate Momentum.
- Read the result and its formula.
About this tool
Enter mass in kilograms and velocity in metres per second. Momentum in kg m/s is their product, and it is conserved in collisions. All physics tools here use standard textbook formulas, labelled as such.
Frequently asked questions
What units should I use?
Use the units on the labels (kg, m, s, N, J, W) so the formula's result comes out in standard units.
Is this exact?
The formula is standard textbook physics; real measurements carry their own errors, but the arithmetic is exact.