Kilojoules (kJ) - Energy Conversions
A kilojoule is a unit of energy in the International System of Units (SI). The symbol for kilojoule is kJ.
The base unit for a kilojoule is joule and the prefix is kilo. The prefix kilo is derived from the Greek chilioi meaning thousand and is symbolized as k. Kilo denotes a factor of 1,000 which means that there are 1,000 joules in a kilojoule.
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Unit Summary
This table provides a summary of the Energy units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| calories (thermochemical) | cal | International System of Units (SI) |
| kilocalories | kcal | International System of Units (SI) |
| British Thermal Unit | BTU or Btu | Imperial System |
| joules | J | International System of Units (SI) |
| kilojoules | kJ | International System of Units (SI) |
| megajoules | MJ | International System of Units (SI) |
| gigajoules | GJ | International System of Units (SI) |
| terajoules | TJ | International System of Units (SI) |
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