Calories to Kilojoules Converter
EngineeringJoules, calories, kilowatt-hours and more.
How to convert Calories to Kilojoules
Multiply the calories value by 0.004184: 1 cal = 0.004184 kJ. Going the other way, 1 kJ = 239.006 cal, so divide by 0.004184 or use the Kilojoules to Calories converter.
About these units
Calories (cal)
The calorie used here is the thermochemical calorie, exactly 4.184 joules, roughly the energy needed to warm one gram of water by one degree Celsius. Food calories are actually kilocalories.
Kilojoules (kJ)
A kilojoule is 1,000 joules. Food energy is labelled in kilojoules in many countries; 1 kJ is about 0.239 kilocalories.
Calories to Kilojoules conversion table
| Calories (cal) | Kilojoules (kJ) |
|---|---|
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 3 cal | 0.012552 kJ |
| 4 cal | 0.016736 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 25 cal | 0.1046 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
| 500 cal | 2.092 kJ |
| 1,000 cal | 4.184 kJ |
More calories conversions
- Calories to Kilocalories1 cal = 0.001 kcal
- Calories to Calories Nutritional1 cal = 0.001 Cal
- Calories to Thermochemical Calories1 cal = 1 calth
- Calories to Joules1 cal = 4.184 J
- Calories to Watt Hours1 cal = 0.00116222 Wh
- Calories to British Thermal Units1 cal = 0.00396565 BTU
- Calories to Ergs1 cal = 4.184e+7 erg
See every unit on the Energy Converter.