How many British thermal units are in 1 kilojoule?

1 kilojoule equals 0.947817 BTU.

How do I convert British thermal units back to kilojoules?

Use the reverse converter: 1 British thermal unit equals 1.05506 kJ.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert kilojoules to British thermal units, multiply the value by 0.94781712.

BTU = kJ × 0.94781712

40 kJ × 0.94781712 = 37.91 BTU

Kilojoule (kJ): 1,000 joules; used for food energy in Australia, New Zealand and much of Europe.
British Thermal Unit (BTU): Used for heating, cooling and gas in the US. The IT BTU is about 1,055.056 joules.

How do I convert kilojoules to British thermal units?: To convert kilojoules to British thermal units, multiply the value by 0.94781712.
How many British thermal units are in 1 kilojoule?: 1 kilojoule equals 0.947817 BTU.
How many British thermal units are in 10 kilojoules?: 10 kJ equals 9.47817 BTU.
How do I convert British thermal units back to kilojoules?: Use the reverse converter: 1 British thermal unit equals 1.05506 kJ.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.