How to Convert Kilojoules to Joules
To convert kilojoules to joules, multiply the value by 1000.
The Formula
Joules = Kilojoules × 1000
Key Fact
1 kilojoule = 1000 joules
Tip: To convert joules back to kilojoules, divide by 1000.
Kilojoules to Joules
Convert kilojoules (kJ) to joules (J) with formulas, examples, and conversion tables.
kJ
J
1 kJ = 1000 J
Full precision:1000 J
Step-by-Step Solution
To convert 1 kilojoules to joules, we multiply by 1000 because one kilojoule equals exactly 1000 joules.
1 kilojoule = 1000 joules
Since each kilojoule contains 1000 joules, we multiply our value by this factor:
1 × 1000 = 1000 joules
So 1 kilojoules = 1000 joules.
Quick check: 1000 ÷ 1000 = 1 kilojoules
Example Conversions
Example 1: 1 kJ = 1000 J
1 × 1000 = 1000
1 × 1000 = 1000
Example 2: 5 kJ = 5000 J
5 × 1000 = 5000
5 × 1000 = 5000
Example 3: 10 kJ = 10000 J
10 × 1000 = 10000
10 × 1000 = 10000
Kilojoules to Joules Table
| Kilojoules | Joules |
|---|---|
| 1 kJ | 1000 J |
| 2 kJ | 2000 J |
| 5 kJ | 5000 J |
| 10 kJ | 10000 J |
| 20 kJ | 20000 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 |
1 Kilojoule in Other Units
| Unit | 1 kJ = |
|---|---|
| Kilojoules to Joules | 1000 J |
| Kilojoules to Megajoules | 0.001 MJ |
| Kilojoules to Gigajoules | 0.000001 GJ |
| Kilojoules to Watt-hours | 0.277778 Wh |
| Kilojoules to Kilowatt-hours | 0.000278 kWh |
| Kilojoules to Megawatt-hours | 2.78e-7 MWh |
| Kilojoules to Calories | 239.006 cal |
| Kilojoules to Kilocalories | 0.239006 kcal |
| Kilojoules to BTU | 0.947813 BTU |
| Kilojoules to Therms | 0.000009 therm |
| Kilojoules to Foot-pounds | 737.561 ft·lb |
| Kilojoules to Electronvolts | 6.24e+21 eV |
| Kilojoules to Ergs | 1e+10 erg |