Online calculator to convert kilojoules to joules (kJ to J) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Energy units.
Conversion Calculator
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Convert kJ to J
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Conversion Definitions
The following is a list of definitions relating to conversions between kilojoules and joules.
What is a kilojoule (kJ)?
A kilojoule is a unit of energy in the International System of Units (SI). The symbol for kilojoule is kJ. There are 0.001 kilojoules in a joule.
What is a joule (J)?
A joule is a unit of energy in the International System of Units (SI). The symbol for joule is J. There are 1,000 joules in a kilojoule.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from kJ to J is:
J = kJ x 1,000
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from kilojoules to joules (kJ to J).
Kilojoule to Joule Conversion Example
Task: Convert 8 kilojoules to joules (show work) Formula: kJ x 1,000 = J Calculations: 8 kJ x 1,000 = 8,000 J Result: 8 kJ is equal to 8,000 J
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from kJ to joules.
Kilojoules to Joules Conversion Chart
| kilojoules (kJ) | joules (J) |
|---|---|
| 1 kJ | 1,000 J |
| 2 kJ | 2,000 J |
| 3 kJ | 3,000 J |
| 4 kJ | 4,000 J |
| 5 kJ | 5,000 J |
| 6 kJ | 6,000 J |
| 7 kJ | 7,000 J |
| 8 kJ | 8,000 J |
| 9 kJ | 9,000 J |
| 10 kJ | 10,000 J |
| 20 kJ | 20,000 J |
| 30 kJ | 30,000 J |
| 40 kJ | 40,000 J |
| 50 kJ | 50,000 J |
| 75 kJ | 75,000 J |
| 100 kJ | 100,000 J |
| 250 kJ | 250,000 J |
| 500 kJ | 500,000 J |
| 750 kJ | 750,000 J |
| 1,000 kJ | 1,000,000 J |
| 2,500 kJ | 2,500,000 J |
| 5,000 kJ | 5,000,000 J |
| 7,500 kJ | 7,500,000 J |
| 10,000 kJ | 10,000,000 J |
| 25,000 kJ | 25,000,000 J |
| 50,000 kJ | 50,000,000 J |
| 75,000 kJ | 75,000,000 J |
| 100,000 kJ | 100,000,000 J |
| 250,000 kJ | 250,000,000 J |
Related Units
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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