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 kilojoules without lookup tables or manual math.
This page is focused on converting BTU to kilojoules. Type a number into the first field and the result appears immediately in the second field.
Example: 1 BTU = 1.0550558526 kJ. Conversion formula: result = value × 1055.05585262 / 1000.
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 kilojoule equals 1000 joules and is convenient for food energy, heat, and engineering calculations.
History: the kilojoule became a convenient multiple of the joule for food, heat, and engineering calculations.
Enter a value in the BTU field. The converter applies the formula "result = value × 1055.05585262 / 1000" and immediately shows the result in kilojoules.
1 BTU = 1.0550558526 kJ.
Yes. Use the swap button or choose the reverse pair from the full conversion list.