BTU per pound to kilojoules per kilogram
Type a value in BTU/lb to get it in kJ/kg instantly.
5,249.782kJ/kg
That's 2.3× as much as boiling water — nothing on our list beats it. A 2 kW kettle would need about 2,625 seconds to supply that for one kilogram.
Convert the other way: kJ/kg to BTU/lb
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 BTU/lb to kJ/kg
To convert BTU per pound to kilojoules per kilogram, multiply by 2.326.
Example: 2,257 BTU/lb × 2.326 = 5,249.78 kJ/kg.
In the other direction, 1 kJ/kg = 0.429923 BTU/lb.
Every unit
Your latent heat in every unit
Tables
BTU/lb to kJ/kg conversion table
| BTU/lb | kJ/kg |
|---|---|
| 50 BTU/lb | 116.3 kJ/kg |
| 100 BTU/lb | 232.6 kJ/kg |
| 200 BTU/lb | 465.2 kJ/kg |
| 334 BTU/lb | 776.884 kJ/kg |
| 500 BTU/lb | 1,163 kJ/kg |
| 1,000 BTU/lb | 2,326 kJ/kg |
| 1,500 BTU/lb | 3,489 kJ/kg |
| 2,000 BTU/lb | 4,652 kJ/kg |
| 2,257 BTU/lb | 5,249.78 kJ/kg |
| 2,500 BTU/lb | 5,815 kJ/kg |
| 5,000 BTU/lb | 11,630 kJ/kg |
kJ/kg to BTU/lb conversion table
| kJ/kg | BTU/lb |
|---|---|
| 50 kJ/kg | 21.4961 BTU/lb |
| 100 kJ/kg | 42.9923 BTU/lb |
| 200 kJ/kg | 85.9845 BTU/lb |
| 334 kJ/kg | 143.594 BTU/lb |
| 500 kJ/kg | 214.961 BTU/lb |
| 1,000 kJ/kg | 429.923 BTU/lb |
| 1,500 kJ/kg | 644.884 BTU/lb |
| 2,000 kJ/kg | 859.845 BTU/lb |
| 2,257 kJ/kg | 970.335 BTU/lb |
| 2,500 kJ/kg | 1,074.81 BTU/lb |
| 5,000 kJ/kg | 2,149.61 BTU/lb |
Quick answers
Quick answers
- How many kJ/kg is 1 BTU/lb?
- 1 BTU/lb is 2.326 kJ/kg.
- How many kJ/kg is 10 BTU/lb?
- 10 BTU/lb is 23.26 kJ/kg.
- How many kJ/kg is 2,257 BTU/lb?
- 2,257 BTU/lb is 5,249.78 kJ/kg.
The units
About these units
BTU per pound (BTU/lb)
The US refrigeration and steam unit.
Kilojoules per kilogram (kJ/kg)
The SI standard for latent heat.
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