Kilojoules to Joules Converter
Convert kJ to J instantly — and see every other energy unit at once.
1 kJ=1,000 J
1 kJ in every unit
Joules
1,000J
Kilojoulesfrom
1kJ
Megajoules
0.001MJ
Watt-hours
0.277778Wh
Kilowatt-hours
2.7778e-4kWh
Calories (small)
239.0057cal
Kilocalories (kcal)
0.239006kcal
BTU
0.947813BTU
Electronvolts
6,241,509,074,460,763,000,000eV
Foot-pounds
737.561ft·lb
Common Kilojoules to Joules conversions
| Kilojoules (kJ) | Joules (J) |
|---|---|
| 1 kJ | 1000 J |
| 2 kJ | 2000 J |
| 5 kJ | 5000 J |
| 10 kJ | 10000 J |
| 25 kJ | 25000 J |
| 50 kJ | 50000 J |
| 100 kJ | 100000 J |
| 250 kJ | 250000 J |
| 500 kJ | 500000 J |
| 1000 kJ | 1000000 J |
The formula
Kilojoules (kJ) — a unit of energy.
Joules (J) — a unit of energy.
Worked examples
1 kJ→1000 J
Apply Kilojoules × 1000 with input = 1. Result: 1000 J.
5 kJ→5000 J
Apply Kilojoules × 1000 with input = 5. Result: 5000 J.
10 kJ→10000 J
Apply Kilojoules × 1000 with input = 10. Result: 10000 J.
FAQ
How do I convert Kilojoules to Joules?
Use the formula: J = Kilojoules × 1000. You can also use the converter above — type any value and the result updates instantly.
Where are Kilojoules used?
Kilojoules (kJ) — a unit of energy.
Where are Joules used?
Joules (J) — a unit of energy.
How do I convert Joules back to Kilojoules?
Use the Joules to Kilojoules converter.