1 kJ equals 0.000277778 kWh. To convert kJ to kWh, multiply the value by 0.000277778; divide by 0.000277778 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert kJ to kWh?
The conversion formula is kWh = kJ × 0.000277778. The conversion factor is fixed by definition, so the result is always exact.
kJ to kWh conversion table
| kJ | kWh |
|---|---|
| 1 kJ | 0.000277778 kWh |
| 2 kJ | 0.000555556 kWh |
| 5 kJ | 0.00138889 kWh |
| 10 kJ | 0.00277778 kWh |
| 100 kJ | 0.0277778 kWh |
| 1,000 kJ | 0.277778 kWh |
What is kJ (kJ)?
The kilojoule (kJ) equals 1,000 joules. It is the SI energy unit on European food labels, usually shown next to kilocalories.
What is kWh (kWh)?
The kilowatt-hour (kWh) is 1,000 watt-hours (3.6 MJ) and the unit on your electricity bill. A typical home uses several kWh per day.
Why convert kJ to kWh?
Energy units come from different fields: joules and kilojoules in physics, kilocalories on food labels, kilowatt-hours on electricity bills, BTU in heating and air-conditioning. Converting between them is common for nutrition, utility bills and HVAC.
One kilocalorie (the food Calorie) equals exactly 4.184 kJ — which is why nutrition labels show both. One kilowatt-hour is 3.6 MJ, equal to about 3,412 BTU or 860 kcal (BIPM/ISO).
How to convert kJ to kWh
- Enter the value in kJ into the left field of the converter.
- Read the result in kWh instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (kWh to kJ).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.