Kilocalories per kilogram to kilojoules per kilogram
Type a value in kcal/kg to get it in kJ/kg instantly.
9,443.288kJ/kg
That's 4.2× as much as boiling water — nothing on our list beats it. A 2 kW kettle would need about 4,722 seconds to supply that for one kilogram.
Convert the other way: kJ/kg to kcal/kg
What it means
How much energy is that?
Latent heat is quoted at the transition temperature and pressure. Water’s 2,257 kJ/kg is at 100 °C; at 20 °C evaporation costs about 2,450.
The math
How to convert kcal/kg to kJ/kg
To convert kilocalories per kilogram to kilojoules per kilogram, multiply by 4.184.
Example: 2,257 kcal/kg × 4.184 = 9,443.29 kJ/kg.
In the other direction, 1 kJ/kg = 0.239006 kcal/kg.
Every unit
Your latent heat in every unit
Tables
kcal/kg to kJ/kg conversion table
| kcal/kg | kJ/kg |
|---|---|
| 50 kcal/kg | 209.2 kJ/kg |
| 100 kcal/kg | 418.4 kJ/kg |
| 200 kcal/kg | 836.8 kJ/kg |
| 334 kcal/kg | 1,397.46 kJ/kg |
| 500 kcal/kg | 2,092 kJ/kg |
| 1,000 kcal/kg | 4,184 kJ/kg |
| 1,500 kcal/kg | 6,276 kJ/kg |
| 2,000 kcal/kg | 8,368 kJ/kg |
| 2,257 kcal/kg | 9,443.29 kJ/kg |
| 2,500 kcal/kg | 10,460 kJ/kg |
| 5,000 kcal/kg | 20,920 kJ/kg |
kJ/kg to kcal/kg conversion table
| kJ/kg | kcal/kg |
|---|---|
| 50 kJ/kg | 11.9503 kcal/kg |
| 100 kJ/kg | 23.9006 kcal/kg |
| 200 kJ/kg | 47.8011 kcal/kg |
| 334 kJ/kg | 79.8279 kcal/kg |
| 500 kJ/kg | 119.503 kcal/kg |
| 1,000 kJ/kg | 239.006 kcal/kg |
| 1,500 kJ/kg | 358.509 kcal/kg |
| 2,000 kJ/kg | 478.011 kcal/kg |
| 2,257 kJ/kg | 539.436 kcal/kg |
| 2,500 kJ/kg | 597.514 kcal/kg |
| 5,000 kJ/kg | 1,195.03 kcal/kg |
Quick answers
Quick answers
- How many kJ/kg is 1 kcal/kg?
- 1 kcal/kg is 4.184 kJ/kg.
- How many kJ/kg is 10 kcal/kg?
- 10 kcal/kg is 41.84 kJ/kg.
- How many kJ/kg is 2,257 kcal/kg?
- 2,257 kcal/kg is 9,443.29 kJ/kg.
The units
About these units
Kilocalories per kilogram (kcal/kg)
The older metric unit, still in food and refrigeration tables.
Kilojoules per kilogram (kJ/kg)
The SI standard for latent heat.
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