Convert Kilocalorie (Food Cal) to Kilojoule.
Input the value of kilocalories below to convert instantly to kilojoules with standard conversions, definitions, and equations.
About converting kilocalories to kilojoules
Kilocalories to kilojoules converts the familiar food Calorie into the kilojoule energy unit used on many international nutrition labels.
Since one kilocalorie is 4.184 kilojoules, converting kilocalories to kilojoules means multiplying by 4.184. So a 500 kcal meal is 2,092 kJ, and a 2,000 kcal daily diet is about 8,368 kJ.
Dietary guidelines quoted in Calories translate directly: the common '2,000 Calorie' reference diet is roughly 8,400 kJ, the figure you will see on Australian and European packaging. Knowing the 4.184 factor lets you compare products and recommendations regardless of which unit the label happens to use.
- Quick estimate: multiply kilocalories by 4.2.
- 2,000 kcal ≈ 8,400 kJ is the standard daily-intake anchor.
How to Convert Kilocalories to Kilojoules
To convert kilocalorie (food cal) to kilojoule, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.
Kilocalorie (Food Cal) (kcal)
Commonly known as the food calorie (capital C), representing 1,000 gram calories.
Kilojoule (kJ)
One thousand Joules.
Kilocalorie (Food Cal) to Kilojoule Conversion Table
| Kilocalorie (Food Cal) (kcal) | Kilojoule (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 5 kcal | 20.92 kJ |
| 10 kcal | 41.84 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 250 kcal | 1046 kJ |
| 500 kcal | 2092 kJ |
| 1000 kcal | 4184 kJ |
Kilojoule to Kilocalorie (Food Cal) Conversion Table
| Kilojoule (kJ) | Kilocalorie (Food Cal) (kcal) |
|---|---|
| 1 kJ | 0.23901 kcal |
| 2 kJ | 0.47801 kcal |
| 3 kJ | 0.71702 kcal |
| 5 kJ | 1.19503 kcal |
| 10 kJ | 2.39006 kcal |
| 15 kJ | 3.58509 kcal |
| 20 kJ | 4.78011 kcal |
| 25 kJ | 5.97514 kcal |
| 50 kJ | 11.95029 kcal |
| 100 kJ | 23.90057 kcal |
| 250 kJ | 59.75143 kcal |
| 500 kJ | 119.50287 kcal |
| 1000 kJ | 239.00574 kcal |