Joules to Kilocalories Converter
Convert joules to kilocalories (J to kcal) instantly with our free online converter. Accurate results with decimal precision.
All energy units in one place — try the unified converter→How to convert joules to kilocalories?
To convert joules to kilocalories, you can use the following conversion factor: **1 joule = 0.000239006 kilocalories**, multiply the number of joules by 0.000239006.
E(kcal) = E(J) × 0.000239006
Example
Convert 4184 J to kilocalories:
E(kcal) = 4184J × 0.000239006 = 1kcal
How many kilocalories in a joule?
There are 0.000239006 kilocalories in one joule.
1J = 0.000239006kcal
1J = 0.000239006kcal

How many joules in a kilocalorie?
There are 4184 joules in one kilocalorie.
1kcal = 4184J
1kcal = 4184J
What is a Kilocalorie?
A kilocalorie (kcal) is a unit of energy equal to 1000 calories. It is commonly used in nutrition to measure the energy content of food and is often referred to as a 'Calorie' (with capital C) on food labels.
Popular joules to kilocalories conversion table
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 1 J | 0.000239006 kcal |
| 100 J | 0.0239006 kcal |
| 1000 J | 0.239006 kcal |
| 4184 J | 1 kcal |
| 5000 J | 1.19503 kcal |
| 10000 J | 2.39006 kcal |
| 20000 J | 4.78012 kcal |
| 50000 J | 11.9503 kcal |
| 100000 J | 23.9006 kcal |
| 500000 J | 119.503 kcal |
| 1000000 J | 239.006 kcal |
