Convert Kilojoules (kJ) to Joules (J)
Enter a value below to convert Kilojoules (kJ) to Joules (J).
Conversion:
1 Kilojoules (kJ) = 1000 Joules (J)
How to Convert Kilojoules (kJ) to Joules (J)
1 kj = 1000 j
1 j = 0.001 kj
Example: convert 15 Kilojoules (kJ) to Joules (J):
25 kj = 25000 j
Kilojoules (kJ) to Joules (J) Conversion Table
| Kilojoules (kJ) | Joules (J) |
|---|---|
| 0.01 kj | 10 j |
| 0.1 kj | 100 j |
| 1 kj | 1000 j |
| 2 kj | 2000 j |
| 3 kj | 3000 j |
| 5 kj | 5000 j |
| 10 kj | 10000 j |
| 20 kj | 20000 j |
| 50 kj | 50000 j |
| 100 kj | 100000 j |
| 1000 kj | 1000000 j |
Kilojoules (kJ)
Definition
A kilojoule (kJ) is a unit of energy equal to 1,000 joules. It is commonly used for expressing larger quantities of energy in nutritional contexts and engineering.
History
The kilojoule naturally derives from the joule with the SI kilo- prefix. It gained widespread use in the 20th century, particularly in countries adopting the metric system for food energy labeling.
Current use
Kilojoules are the primary energy unit on food labels in Australia, New Zealand, and many European countries. They are also used in heating, ventilation, and chemical energy calculations.
Joules (J)
Definition
A joule (J) is the SI unit of energy, defined as the work done when a force of one newton moves an object one meter in the direction of the force. It equals 1 kg⋅m²/s².
History
The joule is named after English physicist James Prescott Joule, who demonstrated the relationship between mechanical work and heat in the 1840s. It was adopted as the SI unit of energy in 1889 by the International Electrical Congress.
Current use
Joules are used universally in physics, engineering, and chemistry to quantify energy, work, and heat. They are the standard unit on food labels in many countries and in scientific research worldwide.