Physics Power Calculator
Calculate power from work done and time taken with P = W/t.
Quick answer: enter your details below and click Calculate Power — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
P
500 New Tools
Enter your details below.
How to use
- Enter the values in the labelled units.
- Click Calculate Power.
- Read the result and its formula.
About this tool
Enter work in joules and time in seconds. Power in watts is work divided by time: the same work done faster means more power. 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.