Power calculator
Fill in what you know and leave the unknown box empty — it works out whichever one is missing. Nothing is uploaded; the arithmetic happens in your browser.
The formula
P = W ÷ t
Where this usually goes wrong
Power is how fast work happens. The same job done in half the time needs twice the power.
Worked example
1500 J in 10 s is 150 W.
Those numbers are already in the boxes above — press Work it out to see it, then change them for your own.
Related physics calculators
- Velocity calculator
- Acceleration calculator
- Force calculator
- Kinetic energy calculator
- Ohm's law calculator
- Momentum calculator
Want this everywhere, not just on this page?
StudyFrame is a Chrome extension. Snip any question on any site and get the answer in place — plus summaries, flashcards and practice tests.
Free to install. 3 uses a day at no cost, more if you study on a streak.