Kj to J ConverterRight in Your Browser
Convert kilojoules (kJ) to joules (J). The kilojoule (kJ) is 1,000 joules — the energy unit on food labels in Australia, New Zealand and much of Europe. The joule (J) is the SI energy unit — the work of pushing with one newton for one meter. Everything is calculated locally in your browser — no server, and it works offline.
1000 J
in joules (joule)
To convert kilojoules to joules, multiply the kilojoule value by 1000.
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| Kilojoules (kJ) | Joules (J) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
Frequently Asked Questions
How many joules are in a kilojoule?
One kilojoule equals 1000 joules (1 kJ = 1000 J). So to go from kilojoules to joules, multiply the kilojoule value by 1000.
What is the formula to convert kilojoules to joules?
To convert kilojoules to joules, multiply the kilojoule value by 1000. For example, 10 kJ is 10000 J.
What is 8700 kilojoules in joules?
8700 kilojoules — an adult's typical daily energy intake — is 8700000 joules. The converter above works for any value, entirely in your browser.
Is the kilojoule to joule conversion exact?
The factor used here is the defined value: 1 kJ = 1000 J. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.
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