Power Calculator

Power tells you how fast work gets done: P = W/t. Enter any two of power, work, and time to solve for the third.

How to interpret the result

Power is the rate of energy transfer. Two machines can do the same work, but the more powerful one does it faster — a 100 W bulb and a 1000 W heater both use electricity, the heater just converts it ten times faster.

Assumptions

• Power is the average over the time interval
• Work is the net mechanical work (or energy transferred)