Kilojoules to Kilocalories
Convert kilojoules to kilocalories instantly.
Kilojoules to Kilocalories (kJ to kcal) Converter
1 kilojoule = 0.23901 kilocalories
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- 1 kJ = 0.23901 kcal
- 5 kJ = 1.195 kcal
- 10 kJ = 2.3901 kcal
- 25 kJ = 5.9751 kcal
- KilojouleskJ
- Kilocalorieskcal
- KilojouleskJ
- Kilocalorieskcal
How it’s calculated
kcal = kJ ÷ 4.184
- Divide the value in kilojoules by 4.184.
- Equivalently, multiply by 0.2390057361.
- 1 kJ = 0.2390057361 kcal · 1 kcal = 4.184 kJ
Quick examples
1 kilojoule = 0.23901 kilocalories · 1 kcal = 4.184 kJ
- 1 kilojoule = 0.23901 kilocalories
- 5 kilojoules = 1.195 kilocalories
- 10 kilojoules = 2.3901 kilocalories
- 25 kilojoules = 5.9751 kilocalories
- 100 kilojoules = 23.901 kilocalories
Kilojoules to kilocalories conversion table
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 0.1 kJ | 0.023901 kcal |
| 0.5 kJ | 0.1195 kcal |
| 1 kJ | 0.23901 kcal |
| 2 kJ | 0.47801 kcal |
| 3 kJ | 0.71702 kcal |
| 4 kJ | 0.95602 kcal |
| 5 kJ | 1.195 kcal |
| 6 kJ | 1.434 kcal |
| 7 kJ | 1.673 kcal |
| 8 kJ | 1.912 kcal |
| 9 kJ | 2.1511 kcal |
| 10 kJ | 2.3901 kcal |
| 15 kJ | 3.5851 kcal |
| 20 kJ | 4.7801 kcal |
| 25 kJ | 5.9751 kcal |
| 30 kJ | 7.1702 kcal |
| 40 kJ | 9.5602 kcal |
| 50 kJ | 11.95 kcal |
| 75 kJ | 17.925 kcal |
| 100 kJ | 23.901 kcal |
| 250 kJ | 59.751 kcal |
| 500 kJ | 119.5 kcal |
| 1,000 kJ | 239.01 kcal |
About these units
Kilojoule (kJ)
SI (metric)
1 kJ = 1,000 J (exact)
Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)
Kilocalorie (food Calorie) (kcal)
other
1 kcal = 4,184 J (exact)
Exactly 4,184 J. The "Calorie" on food labels is one of these.
Source: NIST SP 811 / Handbook 44
Frequently asked questions
How do I convert kilojoules to kilocalories?
Use kcal = kJ ÷ 4.184. Divide the value in kilojoules by 4.184.
How many kilocalories are in 1 kilojoule?
1 kilojoule (kJ) equals 0.23901 kilocalories (kcal); more precisely 0.2390057361.
How many kilojoules are in 1 kilocalorie (food Calorie)?
1 kilocalorie (food Calorie) (kcal) equals 4.184 kilojoules (kJ).
What is 10 kJ in kcal?
10 kilojoules = 2.3901 kilocalories.
What is a kilocalorie (food Calorie)?
Exactly 4,184 J. The "Calorie" on food labels is one of these.
Related conversions
Formula: kcal = kJ ÷ 4.184. Factors last reviewed 2026-10-27.