Convert Kilojoules to Calories
1 kJ = 239.01 cal
Conversion Table
| kilojoules (kJ) | calories (cal) |
|---|---|
| 0.5 | 119.5 |
| 1 | 239.01 |
| 2 | 478.01 |
| 5 | 1195.03 |
| 10 | 2390.06 |
| 25 | 5975.14 |
| 50 | 11950.29 |
| 100 | 23900.57 |
| 250 | 59751.43 |
| 500 | 119502.87 |
| 1000 | 239005.74 |
How to Convert kilojoules to calories
To convert kilojoules to calories, multiply the value by the conversion factor:
For example: 10 kJ = 2390.06 cal
About kilojoules and calories
The Conversion Formula
To convert kilojoules to calories, multiply the value by the conversion factor: 1 kJ = 239.01 cal. For a worked example, suppose you need to convert 25 kJ to calories: 25 × 239.01 = 5975.14 cal. To convert in the opposite direction, divide by 239.01, or equivalently multiply by 0.004184.
About kilojoules
The kilojoule (kJ) is the standard unit for food energy in most of the world (Australia, Europe, etc.), replacing the Calorie. One food Calorie (kcal) is approximately 4.2 kJ. It provides a more precise measure of energy intake than the large Calorie. kilojoules are commonly used in Food labels (Global), Exercise machines, Diet planning, and Thermodynamics, Metabolic rate tracking.
A slice of bread has about 300-400 kJ.
About calories
The calorie (lowercase c) was originally defined as the heat required to raise 1 gram of water by 1°C. It is a tiny unit, often called the 'gram calorie'. It is mostly used in chemistry and physics today, not for food. calories are commonly used in Chemistry experiments, Thermodynamics, Specific heat capacity, and Physics problems.
Heating 1 gram of water by 1°C takes 1 calorie.
When Would You Convert kilojoules to calories?
Converting between kilojoules and calories is one of the most common energy conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 kJ = 239.01 cal) memorized or bookmarked can save time in professional and everyday contexts alike.