Energy from Power and Time Calculator
🛹 Work, energy & power. Use the Energy from power and time formula to find energy, power, time: pick the value you want, type the others, and the answer updates as you go.
Energy3.6 × 10⁶ J
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 |
|---|---|
| Energy | J |
| Power | W |
| Time | s |
Worked example
Find the energy when Power = 1000 W, Time = 3600 s.
Using E = P t: Energy = 3.6 × 10⁶ J.
Frequently asked questions
What is the formula for Energy from power and time?
E = P t.
What do the letters stand for, and what units are used?
Energy in J, Power in W, Time in s.
How do you calculate energy?
Put the values into E = P t. For example, with Power = 1000 W, Time = 3600 s, energy = 3.6 × 10⁶ J.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (energy, power, time) and fill in the others: it rearranges the formula for you.
