Quick answer: 1 Kilojoule in Calorie
1 kJ equals 239.005736 cal. To convert Kilojoule to Calorie, multiply by 239.005736 using the free calculator above — no signup needed.
Energy & Work units
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About Energy & Work Converter
The Energy & Work Converter converts between 7 different units, including Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh). The base unit is the Joule, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Joule = 0.001 Kilojoule, 0.239006 Calorie, 0.000239006 Kilocalorie (kcal).
Scale of this category: the smallest unit is the Joule (J) and the largest is the Kilowatt-hour (kWh) (kWh).
Last updated: 2026-09-15
Energy & Work conversion factors
| Unit | Symbol | Value in Joule |
|---|---|---|
| Joule | J | 1 J = 1 J |
| Kilojoule | kJ | 1 kJ = 1000 J |
| Calorie | cal | 1 cal = 4.184 J |
| Kilocalorie (kcal) | kcal | 1 kcal = 4184 J |
| Watt-hour (Wh) | Wh | 1 Wh = 3600 J |
| Kilowatt-hour (kWh) | kWh | 1 kWh = 3600000 J |
| BTU | BTU | 1 BTU = 1055.06 J |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Kilojoule in Calorie?
- Multiply 1 by the conversion factor 239.005736
- 1 Kilojoule = 239.005736 Calorie
How much is 5 Kilojoule in Calorie?
- Multiply 5 by the conversion factor 239.005736
- 5 Kilojoule = 1195.03 Calorie
How much is 25 Kilojoule in Calorie?
- Multiply 25 by the conversion factor 239.005736
- 25 Kilojoule = 5975.14 Calorie
Quick Conversion Reference Table
| Kilojoule (kJ) | Calorie (cal) |
|---|---|
| 1 kJ (Kilojoule) | 239.005736 cal (Calorie) |
| 2 kJ (Kilojoule) | 478.011472 cal (Calorie) |
| 5 kJ (Kilojoule) | 1195.03 cal (Calorie) |
| 10 kJ (Kilojoule) | 2390.06 cal (Calorie) |
| 20 kJ (Kilojoule) | 4780.11 cal (Calorie) |
| 50 kJ (Kilojoule) | 11950.29 cal (Calorie) |
| 100 kJ (Kilojoule) | 23900.57 cal (Calorie) |
| 500 kJ (Kilojoule) | 119502.87 cal (Calorie) |
| 1000 kJ (Kilojoule) | 239005.74 cal (Calorie) |
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FAQ
How much is 1 Kilojoule in Calorie?
1 Kilojoule = 239.005736 Calorie.
How do I convert Kilojoule to Calorie?
Enter your value in Kilojoule into the converter above and the result in Calorie appears instantly. 1 kJ equals 239.005736 cal — just multiply your value by 239.005736.
What is the formula for Kilojoule to Calorie?
The formula is: value in Calorie = value in Kilojoule × 239.005736. For example, 5 kJ × 239.005736 = 1195.03 cal.
Is this Kilojoule to Calorie converter free and accurate?
Yes. This Kilojoule to Calorie converter is 100% free, uses the exact international conversion factor (239.005736), and works on any device with no signup.
How do I convert Calorie back to Kilojoule?
To convert back, divide by 239.005736 (or multiply by 0.004184). You can also use our dedicated How Many Kilojoule in 1 Calorie? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Energy & Work units are supported?
This converter supports 7 units: Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh), Kilowatt-hour (kWh), BTU.