Energy conversion
1 kilojoule (kJ) equals 0.239005736138 kilocalorie (kcal). Enter any value below to convert from kJ to kcal.
Enter a value and choose units. Results update instantly.
1 kJ = 0.2390057361 kcal
| Unit | Value |
|---|---|
| Joule J | 1,000 |
| Kilojoule kJ | 1 |
| Thermochemical calorie cal | 239.0057361377 |
| Kilocalorie kcal | 0.2390057361 |
| Watt-hour Wh | 0.2777777778 |
| Kilowatt-hour kWh | 0.0002777778 |
| BTU (International Table) BTUₕᵀ | 0.9478171203 |
| Foot-pound ft·lb | 737.5621492773 |
| Electronvolt eV | 6.2415090745e21 |
Formula
Use this relationship for a direct conversion:
2 kJ = 0.4780114723 kcal.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Quick reference
| Kilojoule (kJ) | Kilocalorie (kcal) |
|---|---|
| 0.01 | 0.0023900574 |
| 0.1 | 0.0239005736 |
| 1 | 0.2390057361 |
| 2 | 0.4780114723 |
| 5 | 1.1950286807 |
| 10 | 2.3900573614 |
| 25 | 5.9751434034 |
| 50 | 11.9502868069 |
| 100 | 23.9005736138 |
| 1,000 | 239.0057361377 |
From unit
One thousand joules.
Symbol: kJ
To unit
One thousand thermochemical calories.
Symbol: kcal
Keep converting
Source
Definitions are checked against NIST SP 811: Energy units. Calculations use full internal precision before display rounding.
View the complete energy converterQuestions
Use the formula kcal = kJ x 0.239005736138. 1 kilojoule (kJ) equals 0.239005736138 kilocalorie (kcal).
Both unit definitions use exact factors. Only the displayed decimal may be rounded.
