Kilojoules to Calories Converter (kJ to kcal)
Convert kilojoules to calories instantly with our free kJ to kcal calculator. Enter a value to see the result.
How to convert kilojoules to calories
To change kJ into kcal, use this formula:
Quick mental estimate: multiply by about 0.24.
Example: to convert 25 kJ to kcal, calculate 5.97514 kcal. To go the other way, use kJ = kcal ÷ 0.239006.
Popular kilojoules to calories conversions
- 1 kJ to kcal = 0.239006 kcal
- 2 kJ to kcal = 0.478011 kcal
- 3 kJ to kcal = 0.717017 kcal
- 5 kJ to kcal = 1.19503 kcal
- 10 kJ to kcal = 2.39006 kcal
- 15 kJ to kcal = 3.58509 kcal
- 20 kJ to kcal = 4.78011 kcal
- 25 kJ to kcal = 5.97514 kcal
- 30 kJ to kcal = 7.17017 kcal
- 40 kJ to kcal = 9.56023 kcal
- 50 kJ to kcal = 11.9503 kcal
- 60 kJ to kcal = 14.3403 kcal
- 70 kJ to kcal = 16.7304 kcal
- 80 kJ to kcal = 19.1205 kcal
- 90 kJ to kcal = 21.5105 kcal
- 100 kJ to kcal = 23.9006 kcal
Kilojoules to Calories conversion chart
| Kilojoules (kJ) | Calories (kcal) |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 5 kJ | 1.19503 kcal |
| 10 kJ | 2.39006 kcal |
| 20 kJ | 4.78011 kcal |
| 25 kJ | 5.97514 kcal |
| 50 kJ | 11.9503 kcal |
| 75 kJ | 17.9254 kcal |
| 100 kJ | 23.9006 kcal |
| 250 kJ | 59.7514 kcal |
| 500 kJ | 119.503 kcal |
| 1,000 kJ | 239.006 kcal |
When do you need kJ to kcal conversion?
This conversion is commonly used for nutrition, electricity bills and physics. Different countries and industries use different units, so converting kilojoules to calories helps you compare measurements accurately.
Frequently asked questions
How many calories are in 1 kilojoules?
1 kJ equals 0.239006 kcal.
How do I convert kilojoules to calories?
Use the formula kcal = kJ × 0.239006. For example, 25 kJ = 5.97514 kcal.
What is 10 kJ in kcal?
10 kJ = 2.39006 kcal.
What is 100 kJ in kcal?
100 kJ = 23.9006 kcal.
How do I convert kcal back to kJ?
Use kJ = kcal ÷ 0.239006. You can also use our Calories to Kilojoules converter.
Is this kJ to kcal converter accurate?
Yes. It uses standard international conversion factors and shows up to 6 significant digits.