BTU (BTU)
BTU is used in heat engineering, air conditioning, heating, and English-language engineering tables.
History: BTU began in British heat engineering as the heat required to warm a pound of water by one degree Fahrenheit.
Quickly convert BTU to joules without lookup tables or manual math.
This page is focused on converting BTU to joules. Type a number into the first field and the result appears immediately in the second field.
Example: 1 BTU = 1055.05585262 J. Conversion formula: result = value × 1055.05585262 / 1.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
BTU is used in heat engineering, air conditioning, heating, and English-language engineering tables.
History: BTU began in British heat engineering as the heat required to warm a pound of water by one degree Fahrenheit.
The joule is the SI unit of energy and connects mechanical work, heat, and electrical energy.
History: the joule is named after James Prescott Joule and is the SI unit of energy.
Enter a value in the BTU field. The converter applies the formula "result = value × 1055.05585262 / 1" and immediately shows the result in joules.
1 BTU = 1055.05585262 J.
Yes. Use the swap button or choose the reverse pair from the full conversion list.