Kilowatt-hour to Joule
Convert kWh to J instantly — free, no sign-up.
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About the Kilowatt-hour (kWh)
The Kilowatt-hour is equal to 1,000 watt-hours, the standard unit electric utilities bill you in and the unit used for EV battery capacity and home solar production.
About the Joule (J)
The Joule is the SI unit of energy, defined as the work done by one newton of force over one meter — a single joule is roughly the energy released dropping an apple one meter.
How to convert kWh to J
- Enter the value in kWh in the box above.
- The J equivalent updates instantly.
- Use the swap button to convert J back to kWh just as easily.