Kilojoule to Joule
1 kJ = 1,000 J
Precision & format
1 kJ equals
1,000J
All 21 units
- JouleJ1,000
- KilojoulekJ1
- MegajouleMJ0.001
- GigajouleGJ0.000001
- MillijoulemJ1,000,000
- Calorie (thermochemical)calexactly 4.184 J239.0057361
- Kilocalorie (thermochemical)kcalfood Calorie0.2390057361
- Calorie (IT)cal (IT)International Table238.8458966
- Kilocalorie (IT)kcal (IT)0.2388458966
- Watt-hourWh0.2777777778
- Kilowatt-hourkWh0.0002777777778
- Megawatt-hourMWh2.777777778 × 10⁻⁷
- BTU (IT)BTUInternational Table0.9478171203
- BTU (thermochemical)BTU (th)0.9484514148
- Therm (US)thm100 000 BTU0.00000948043428
- Foot-poundft·lbf737.5621493
- Ergerg10,000,000,000
- ElectronvolteV6.241509074 × 10²¹
- KiloelectronvoltkeV6.241509074 × 10¹⁸
- MegaelectronvoltMeV6.241509074 × 10¹⁵
- Tonne of oil equivalenttoe2.388458966 × 10⁻⁸
Kilojoule to Joule table
| Kilojoule (kJ) | Joule (J) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
How the conversion works
Multiply the kilojoule figure by 1,000 to get joule. Every factor on this site is anchored to the SI base unit for energy, so the same number is used everywhere it appears.
Going the other way, 1 J = 0.001 kJ — see joule to kilojoule.
