Quick answer: 1 Kilojoule in Kilocalorie (kcal)
1 kJ equals 0.239006 kcal. To convert Kilojoule to Kilocalorie (kcal), multiply by 0.239006 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 Kilocalorie (kcal)?
- Multiply 1 by the conversion factor 0.239006
- 1 Kilojoule = 0.239006 Kilocalorie (kcal)
How much is 10 Kilojoule in Kilocalorie (kcal)?
- Multiply 10 by the conversion factor 0.239006
- 10 Kilojoule = 2.390057 Kilocalorie (kcal)
How much is 100 Kilojoule in Kilocalorie (kcal)?
- Multiply 100 by the conversion factor 0.239006
- 100 Kilojoule = 23.900574 Kilocalorie (kcal)
Quick Conversion Reference Table
| Kilojoule (kJ) | Kilocalorie (kcal) (kcal) |
|---|---|
| 1 kJ (Kilojoule) | 0.239006 kcal (Kilocalorie (kcal)) |
| 2 kJ (Kilojoule) | 0.478011 kcal (Kilocalorie (kcal)) |
| 5 kJ (Kilojoule) | 1.195029 kcal (Kilocalorie (kcal)) |
| 10 kJ (Kilojoule) | 2.390057 kcal (Kilocalorie (kcal)) |
| 20 kJ (Kilojoule) | 4.780115 kcal (Kilocalorie (kcal)) |
| 50 kJ (Kilojoule) | 11.950287 kcal (Kilocalorie (kcal)) |
| 100 kJ (Kilojoule) | 23.900574 kcal (Kilocalorie (kcal)) |
| 500 kJ (Kilojoule) | 119.502868 kcal (Kilocalorie (kcal)) |
| 1000 kJ (Kilojoule) | 239.005736 kcal (Kilocalorie (kcal)) |
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FAQ
How much is 1 Kilojoule in Kilocalorie (kcal)?
1 Kilojoule = 0.239006 Kilocalorie (kcal).
How do I convert Kilojoule to Kilocalorie (kcal)?
Enter your value in Kilojoule into the converter above and the result in Kilocalorie (kcal) appears instantly. 1 kJ equals 0.239006 kcal — just multiply your value by 0.239006.
What is the formula for Kilojoule to Kilocalorie (kcal)?
The formula is: value in Kilocalorie (kcal) = value in Kilojoule × 0.239006. For example, 10 kJ × 0.239006 = 2.390057 kcal.
Is this Kilojoule to Kilocalorie (kcal) converter free and accurate?
Yes. This Kilojoule to Kilocalorie (kcal) converter is 100% free, uses the exact international conversion factor (0.239006), and works on any device with no signup.
How do I convert Kilocalorie (kcal) back to Kilojoule?
To convert back, divide by 0.239006 (or multiply by 4.184). You can also use our dedicated How Many Kilojoule in 1 Kilocalorie (kcal)? 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.