Kcal to Kj ConverterRight in Your Browser
Convert kilocalories (kcal) to kilojoules (kJ). The kilocalorie (kcal) is the "Calorie" of food labels and diet plans — 1,000 small calories, or about 4.18 kJ each. The kilojoule (kJ) is 1,000 joules — the energy unit on food labels in Australia, New Zealand and much of Europe. Everything is calculated locally in your browser — no server, and it works offline.
4.184 kJ
in kilojoules (kilojoule)
To convert kilocalories to kilojoules, multiply the kilocalorie value by 4.184.
Switch to Kj to KcalKcal to Kj Chart
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 4 | 16.736 |
| 5 | 20.92 |
| 10 | 41.84 |
| 20 | 83.68 |
| 50 | 209.2 |
| 100 | 418.4 |
Frequently Asked Questions
How many kilojoules are in a kilocalorie?
One kilocalorie equals 4.184 kilojoules (1 kcal = 4.184 kJ). So to go from kilocalories to kilojoules, multiply the kilocalorie value by 4.184.
What is the formula to convert kilocalories to kilojoules?
To convert kilocalories to kilojoules, multiply the kilocalorie value by 4.184. For example, 10 kcal is 41.84 kJ.
What is 2000 kilocalories in kilojoules?
2000 kilocalories — a typical adult's daily intake — is 8368 kilojoules. The converter above works for any value, entirely in your browser.
Is the kilocalorie to kilojoule conversion exact?
The factor used here is the defined value: 1 kcal = 4.184 kJ. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.
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