Convert Kilojoules to British Thermal Units
kJ to BTU · energy conversion
What are kilojoules and british thermal units?
A kilojoule is 1,000 joules, used for food energy outside the US. A British thermal unit is the energy to heat one pound of water by 1 °F, used for heating and AC. For reference: a food Calorie is one kilocalorie (4,184 J), and home electricity is billed in kilowatt-hours.
How to convert kilojoules to british thermal units
1 kJ = 0.947817 BTU. To convert, multiply the number of kilojoules by 0.947817. For example, 5 kJ = 4.73908 BTU, and 20 kJ = 18.9563 BTU. To go the other way, multiply british thermal units by 1.05506 (since 1 BTU = 1.05506 kJ).
Kilojoules to British Thermal Units conversion table
| Kilojoules (kJ) | British Thermal Units (BTU) |
|---|---|
| 1 | 0.947817 |
| 10 | 9.47817 |
| 100 | 94.7817 |
| 500 | 473.908 |
| 1,000 | 947.817 |
| 2,000 | 1,895.63 |
| 5,000 | 4,739.08 |
FAQ
What is 1 kJ in BTU?
1 kJ = 0.947817 BTU. To convert any amount, multiply the number of kilojoules by 0.947817.
How do I convert british thermal units back to kilojoules?
Go the other way: 1 BTU = 1.05506 kJ, so multiply british thermal units by 1.05506 to get kilojoules.
Is a kilojoule bigger than a british thermal unit?
No — 1 kJ is the smaller unit, equal to 0.947817 BTU (it takes 1.05506 kJ to make one BTU).
Are these energy conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.