1 BTU equals exactly
1.055,06 Joules
The British Thermal Unit (BTU) is defined as the energy needed to heat one pound of water by one degree Fahrenheit, and is the thermal unit of the British/American imperial system. One BTU is exactly equal to 1,055.05585 Joules, the reference SI unit.
To convert a measurement from BTU to Joules, simply multiply the value by 1,055.06:
To convert from Joules to BTU, perform the inverse operation, dividing by 1,055.06:
This conversion is useful in scientific and technical contexts for translating American thermal specifications expressed in BTU into the official SI unit (Joule) for physics or engineering calculations requiring consistency with the rest of the International System.