About converting BTU to Joule
This page converts BTU (BTU) to Joule (J). Enter a value above to get an immediate result with the target unit clearly shown.
BTU to Joule formula
To convert from BTU to Joule, multiply the starting value by 1055.05585262. This factor expresses how one BTU relates to the selected Joule unit.
Conversion example: 100 BTU × 1055.05585262 = 105505.585262 J. Therefore, 100 BTU equals 105505.585262 Joule.
This BTU to Joule conversion compares two units used to express the capacity to perform work or transfer heat. Use BTU (BTU) as the source unit when your original value is recorded in that unit; the calculated result is then presented in Joule (J).