Kilojoules to BTU converter

To convert kilojoules to BTU, enter the value in the first field. The result in BTU is calculated automatically using the exact conversion factor.

1 kJ ≈ 0.947817120313 BTU
1 BTU = 1.05505585262 kJ

Formula: BTU ≈ kJ × 0.947817120313
kJ = BTU × 1.05505585262

Definitions: 1 kJ = 1000 J; 1 BTU = 1055.05585262 J

The kilojoule (kJ) is 1,000 joules. It is used for food energy on nutrition labels in Australia, New Zealand and Europe, often next to kcal, and for reaction energies in chemistry.

The British thermal unit (BTU) here is the International Table BTU, about 1,055 joules, roughly the energy needed to raise one pound of water by one degree Fahrenheit. It is used in the United States for heating and cooling equipment, fuel content and natural gas.

See the conversion table with commonly used values, handy for quick reference or study.