Joules (J) to kilojoules (kJ), energy conversion calculator and how to convert.
- Joules to kilojoules converter
- How to convert joules to kilojoules
- Joules to kilojoules conversion table
Joules to kilojoules converter
Enter the energy in joules and press the Convert button:
Energy Unit Converter
SI Energy Units
The joule (J) is the SI unit of energy. One joule equals the energy transferred when applying a force of one newton through a distance of one meter.
Gigajoule (GJ)
109 J
1,000,000,000 J
1,000,000,000 J
Megajoule (MJ)
106 J
1,000,000 J
1,000,000 J
Kilojoule (kJ)
103 J
1,000 J
1,000 J
Joule (J)
Base unit
Millijoule (mJ)
10-3 J
0.001 J
0.001 J
Microjoule (µJ)
10-6 J
0.000001 J
0.000001 J
Nanojoule (nJ)
10-9 J
0.000000001 J
0.000000001 J
Common Energy Equivalents:
| Energy Amount | Equivalent |
|---|---|
| 4.184 J | 1 calorie (small calorie) |
| 3,600,000 J (3.6 MJ) | 1 kilowatt-hour (kWh) |
| 1,055 J | 1 British Thermal Unit (BTU) |
| 4,184,000 J (4.184 MJ) | 1 food Calorie (kilocalorie) |
How to convert joules to kilojoules
One joule is equal to thousandth of a kilojoule:
1J = 0.001kJ
The energy in kilojoules E(kJ) is equal to the energy in joules E(J) divided by 1000:
E(kJ) = E(J) / 1000
Example
Convert 500 joules to kilojoules.
The energy E in kilojoules (kJ) is equal to 500 joules (J) divided by 1000:
E(kJ) = 500J / 1000 = 0.5kJ
Joules to kilojoules conversion table
| Energy (J) | Energy (kJ) |
|---|---|
| 1 J | 0.001 kJ |
| 2 J | 0.002 kJ |
| 3 J | 0.003 kJ |
| 4 J | 0.004 kJ |
| 5 J | 0.005 kJ |
| 6 J | 0.006 kJ |
| 7 J | 0.007 kJ |
| 8 J | 0.008 kJ |
| 9 J | 0.009 kJ |
| 10 J | 0.01 kJ |
| 20 J | 0.02 kJ |
| 30 J | 0.03 kJ |
| 40 J | 0.04 kJ |
| 50 J | 0.05 kJ |
| 60 J | 0.06 kJ |
| 70 J | 0.07 kJ |
| 80 J | 0.08 kJ |
| 90 J | 0.09 kJ |
| 100 J | 0.1 kJ |
| 200 J | 0.2 kJ |
| 300 J | 0.3 kJ |
| 400 J | 0.4 kJ |
| 500 J | 0.5 kJ |
| 600 J | 0.6 kJ |
| 700 J | 0.7 kJ |
| 800 J | 0.8 kJ |
| 900 J | 0.9 kJ |
| 1000 J | 1 kJ |
| 2000 J | 2 kJ |
| 3000 J | 3 kJ |
| 4000 J | 4 kJ |
| 5000 J | 5 kJ |
| 6000 J | 6 kJ |
| 7000 J | 7 kJ |
| 8000 J | 8 kJ |
| 9000 J | 9 kJ |
| 10000 J | 10 kJ |
| 100000 J | 100 kJ |
