Kilojoule to Kilocalorie (thermochemical) Converter
1 kilojoule is about 0.2390057361 kilocalories. Convert kilojoules (kJ) to kilocalories (kcal) below: type a value and the result updates as you type.
kJ to kcal calculator
Result
Kilojoule to Kilocalorie (thermochemical) conversion
1 kJ ≈ 0.2390057361 kcalone kilojoule in kilocalories
1 kcal = 4.184 kJone kilocalorie in kilojoules
Kilojoule (kJ): Exactly 1000 joules.
Kilocalorie (thermochemical) (kcal): Exactly 1000 thermochemical calories (4184 joules).
Source:Kilojoule: SI Brochure, 9th edition (BIPM, 2019); Kilocalorie (thermochemical): NIST Special Publication 811 (2008), Appendix B.8
How to convert kilojoules to kilocalories
To convert kilojoules to kilocalories, divide the number of kilojoules by 4.184.
Formula
kcal = kJ ÷ 4.184
Examples
- 5 kJ = 5 ÷ 4.184 ≈ 1.195028681 kcal
- 25 kJ = 25 ÷ 4.184 ≈ 5.975143403 kcal
- 100 kJ = 100 ÷ 4.184 ≈ 23.90057361 kcal
Kilojoule to Kilocalorie (thermochemical) conversion table
| Kilojoule (kJ) | Kilocalorie (thermochemical) (kcal) |
|---|---|
| 0.1 kJ | 0.02390057361 kcal |
| 0.5 kJ | 0.1195028681 kcal |
| 1 kJ | 0.2390057361 kcal |
| 2 kJ | 0.4780114723 kcal |
| 3 kJ | 0.7170172084 kcal |
| 5 kJ | 1.195028681 kcal |
| 10 kJ | 2.390057361 kcal |
| 20 kJ | 4.780114723 kcal |
| 25 kJ | 5.975143403 kcal |
| 50 kJ | 11.95028681 kcal |
| 100 kJ | 23.90057361 kcal |
| 250 kJ | 59.75143403 kcal |
| 500 kJ | 119.5028681 kcal |
| 1000 kJ | 239.0057361 kcal |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many kilocalories are in one kilojoule?
- One kilojoule is about 0.2390057361 kilocalories.
- How do I convert kilocalories to kilojoules?
- To convert kilocalories to kilojoules, multiply the number of kilocalories by 4.184. The formula is kJ = kcal × 4.184.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 4.184 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a kilojoule or a kilocalorie?
- A kilocalorie is 4.184 times larger than a kilojoule. In other words, a kilojoule is about 0.2390057361 of a kilocalorie.