Convert Kilojoule to Kilocalorie (Food Cal).
Input the value of kilojoules below to convert instantly to kilocalories with standard conversions, definitions, and equations.
About converting kilojoules to kilocalories
Kilojoules to kilocalories is the nutrition-label conversion between the metric energy unit and the 'Calories' most people use to think about food.
One kilocalorie (the food 'Calorie') is 4.184 kilojoules, so converting kilojoules to kilocalories means dividing by 4.184. A 2,000 kJ snack is about 478 kcal, and an 8,400 kJ daily intake is roughly 2,000 kcal.
Food labels in Europe and Australia list energy in kilojoules, while the US and many other countries use Calories (capital C), which are really kilocalories. The factor of about 4.2 between them is why a chocolate bar can read '1,100 kJ' on one label and '263 Cal' on another for the very same product.
- Quick estimate: divide kilojoules by 4.2.
- The food 'Calorie' on US labels is a kilocalorie — 1 Cal = 1 kcal = 4.184 kJ.
How to Convert Kilojoules to Kilocalories
To convert kilojoule to kilocalorie (food cal), we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.
Kilojoule (kJ)
One thousand Joules.
Kilocalorie (Food Cal) (kcal)
Commonly known as the food calorie (capital C), representing 1,000 gram calories.
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 |
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 |