Kilojoule (kJ) to Calorie (cal)
1 kJ = 239.00574 cal · Free instant converter, no signup required.
Direct Answer
1 kJ = 239.00574 cal
Formula: cal = kJ × 239.00574. This page supports instant conversion, reference table checks, and related unit links.
About this conversion
This Koverts page converts kilojoules (kJ) to small calories (cal) — not kilocalories; 1 cal is the energy to heat 1 g of water by 1 °C.
Kilojoules appear on modern nutrition labels and engineering datasheets — a coherent SI view of the same energy.
The small calorie is a legacy chemistry unit — still used in some textbooks alongside joules; always check if the label means cal or kcal.
Typical uses
- Legacy textbook thermochemistry problems
- Double-checking nutrition math when apps mix units
- Teaching the difference between cal and kcal
Common reference values
- 1 kJ = 239.00574 cal
- 10 kJ = 2,390.0574 cal
- 100 kJ = 23,900.574 cal
Tip: Divide kilojoules by 4.184 to get small calories. For kilocalories (food Calories), divide kJ by 4184 instead.
Educational reference — always verify critical measurements (medical, engineering, legal) with primary sources.
// kilojoule Conversion table calorie
| Kilojoule (kJ) (kJ) | Calorie (cal) (cal) |
|---|---|
| 1 kJ | 239.00574 cal |
| 2 kJ | 478.01147 cal |
| 5 kJ | 1,195.0287 cal |
| 10 kJ | 2,390.0574 cal |
| 20 kJ | 4,780.1147 cal |
| 25 kJ | 5,975.1434 cal |
| 50 kJ | 11,950.287 cal |
| 100 kJ | 23,900.574 cal |
| 250 kJ | 59,751.434 cal |
| 500 kJ | 119,502.87 cal |
| 1000 kJ | 239,005.74 cal |
How to convert
Kilojoule (kJ) → Calorie (cal)
To convert from Kilojoule (kJ) (kJ) to Calorie (cal) (cal)，multiply your value by 239.00574.
For example，10 kJ = 2,390.0574 cal.
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