Watts to Joules Calculator
Convert power (Watts) to energy (Joules) with formula, table, examples, and interactive graphs.
Understanding Watts and Joules
A Watt (W) measures power — the rate at which energy is used. A Joule (J) measures energy. Energy in Joules is calculated using the formula:
Formula:
Energy (J) = Power (W) × Time (s)
Interactive Calculator
Result: 0 J
Conversion Table
| Power | Energy in 1 hour (J) | Energy in 1 day (J) |
|---|---|---|
| 1 mW | 3.6 J | 86.4 J |
| 1 W | 3600 J | 86400 J |
| 1 kW | 3,600,000 J | 86,400,000 J |
| 1 MW | 3,600,000,000 J | 86,400,000,000 J |
Interactive Graph
Frequently Asked Questions
How do I convert Watts to Joules?
Multiply the power in Watts by the time in seconds: E = P × t.
Why is time important?
Because energy depends on both power and the duration it is applied.
Can I convert kW or mW to Joules?
Yes, convert them to Watts first, then multiply by time in seconds.