BTU to Kilojoules Converter
Convert British thermal units (BTU) to kilojoules (kJ)
Result
1.055055853 kJ
Kilojoules
1 BTU = 1.055055853 kJ
1 BTU in other units
- 1Enter a valueType the number to convert
- 2Pick the unitsChoose what to convert from and to
- 3Read the resultSee it in every other unit too
How to convert British thermal units to kilojoules
One British thermal unit equals 1.055056 kilojoules, so multiply the number of British thermal units by 1.055056.
kJ = BTU × 1.055056
1 BTU = 1.055056 kJ · 1 kJ = 0.9478171 BTU
Worked example
To convert 5 British thermal units to kilojoules: 5 BTU × 1.055056 = 5.275279 kJ.
About British thermal units (BTU)
A British thermal unit is about 1,055 J, used for heating and air-conditioning in the US.
About kilojoules (kJ)
A kilojoule is 1,000 J. Food labels in many countries show energy in kJ alongside kcal.
More conversions
BTU to other units
Frequently asked questions
How many kilojoules are in one British thermal unit?
One British thermal unit equals 1.055056 kilojoules.
How many British thermal units are in one kilojoule?
One kilojoule equals 0.9478171 British thermal units.
How do I convert British thermal units to kilojoules?
Use the formula kJ = BTU × 1.055056. For example, 5 BTU × 1.055056 = 5.275279 kJ.