Power Calculator
🛹 Work, energy & power. Use the Power formula to find power, energy transferred, time: pick the value you want, type the others, and the answer updates as you go.
Power25 W
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Power | W |
| Energy transferred | J |
| Time | s |
Worked example
Find the power when Energy transferred = 100 J, Time = 4 s.
Using P = E/t: Power = 25 W.
Frequently asked questions
What is the formula for Power?
P = E/t.
What do the letters stand for, and what units are used?
Power in W, Energy transferred in J, Time in s.
How do you calculate power?
Put the values into P = E/t. For example, with Energy transferred = 100 J, Time = 4 s, power = 25 W.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (power, energy transferred, time) and fill in the others: it rearranges the formula for you.
