British thermal units (BTU) to Kilojoules (kJ) Conversion
British thermal units
The British thermal unit (BTU) is a unit of energy approximately equal to 1,055.06 joules, defined as the energy required to raise the temperature of one pound of water by one degree Fahrenheit. It remains the standard unit for heating and cooling capacity in HVAC systems in the United States: air conditioners and furnaces are rated in BTU/hour. A typical residential air conditioner is rated at 5,000–24,000 BTU/h. One BTU equals approximately 0.000293 kWh.
Kilojoules
The kilojoule (kJ) is a unit of energy equal to exactly 1,000 joules. It is the standard unit for expressing food energy in most countries outside the United States, where food labels display energy in both kilojoules and kilocalories (kcal). One kilocalorie equals exactly 4.184 kilojoules. In thermodynamics and chemistry, reaction enthalpies and bond energies are commonly tabulated in kilojoules per mole (kJ/mol).
| British thermal units (BTU) | Kilojoules (kJ) |
|---|---|
| 0.1 BTU | 0.1055 kJ |
| 1 BTU | 1.0551 kJ |
| 2 BTU | 2.1101 kJ |
| 3 BTU | 3.1652 kJ |
| 5 BTU | 5.2753 kJ |
| 10 BTU | 10.5506 kJ |
| 20 BTU | 21.1011 kJ |
| 30 BTU | 31.6517 kJ |
| 50 BTU | 52.7528 kJ |
| 100 BTU | 105.5056 kJ |
| 1000 BTU | 1,055.0559 kJ |
Frequently Asked Questions (FAQ)
How many kilojoules are in 1 British thermal units?
1 British thermal units (BTU) is exactly 1.0551 kilojoules (kJ).
How do I convert British thermal units to kilojoules?
Multiply the value in British thermal units by 1.0551 to get the result in kilojoules. Or use the converter above — type any number and see the result instantly.