1 Joule equals about
0,000948 BTU
This is the inverse operation compared to the BTU → Joule conversion. Since the Joule is a much smaller unit than the BTU, its value expressed in BTU always results in a small number, useful especially as an intermediate step in comparative thermal calculations between the two systems.
To convert a measurement from Joules to BTU, simply divide the value by 1,055.06:
To convert from BTU to Joules, perform the inverse operation, multiplying by 1,055.06:
This inverse conversion is useful for those working with scientific calculations expressed in Joules who need to compare them with American technical specifications (air conditioners, boilers, systems) that traditionally use BTU as the reference unit.