Conversion Formula
$$E_{\text{kJ}} = E_{\text{BTU}} \times 1.05506$$
Multiply the energy in BTU by 1.05506 to get kilojoules.
BTU to kJ Conversion Table
| British Thermal Unit (BTU) | Kilojoule (kJ) |
|---|---|
| 0.1 | 0.105506 |
| 0.5 | 0.527528 |
| 1 | 1.05506 |
| 2 | 2.11011 |
| 5 | 5.27528 |
| 10 | 10.5506 |
| 25 | 26.3764 |
| 50 | 52.7528 |
| 100 | 105.506 |
| 250 | 263.764 |
| 500 | 527.528 |
| 1,000 | 1,055.06 |
BTU to kJ in Engineering
Energy conversions span mechanical, thermal, electrical, and chemical engineering. BTU and therms are standard for HVAC and natural gas, kWh for electrical systems, and joules for scientific calculations.
British Thermal Unit: Standard US thermal energy unit. Essential for HVAC, heating, and natural gas calculations.
Kilojoule: Common metric energy unit used in thermodynamics, HVAC, and international energy specifications.