Joules to BTU Converter
Convert joules (J) to British thermal units (BTU)
Result
0.00094781712 BTU
BTU
1 J = 0.00094781712 BTU
1 J in other units
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How to convert joules to British thermal units
One joule equals 0.0009478171 British thermal units, so multiply the number of joules by 0.0009478171.
BTU = J × 0.0009478171
1 J = 0.0009478171 BTU · 1 BTU = 1,055.056 J
Worked example
To convert 5 joules to British thermal units: 5 J × 0.0009478171 = 0.004739086 BTU.
About joules (J)
The joule is the SI unit of energy: the work done by a force of one newton over one metre.
About British thermal units (BTU)
A British thermal unit is about 1,055 J, used for heating and air-conditioning in the US.
More conversions
Joules to other units
Frequently asked questions
How many British thermal units are in one joule?
One joule equals 0.0009478171 British thermal units.
How many joules are in one British thermal unit?
One British thermal unit equals 1,055.056 joules.
How do I convert joules to British thermal units?
Use the formula BTU = J × 0.0009478171. For example, 5 J × 0.0009478171 = 0.004739086 BTU.