How many British thermal units are in 1 kilocalorie?

1 kilocalorie equals 3.96567 BTU.

How do I convert British thermal units back to kilocalories?

Use the reverse converter: 1 British thermal unit equals 0.252164 kcal.

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

To convert kilocalories to British thermal units, multiply the value by 3.96566683.

BTU = kcal × 3.96566683

40 kcal × 3.96566683 = 158.63 BTU

Kilocalorie (kcal): The "food calorie" on nutrition labels. Equal to 4,184 joules.
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 kilocalories to British thermal units?: To convert kilocalories to British thermal units, multiply the value by 3.96566683.
How many British thermal units are in 1 kilocalorie?: 1 kilocalorie equals 3.96567 BTU.
How many British thermal units are in 10 kilocalories?: 10 kcal equals 39.6567 BTU.
How do I convert British thermal units back to kilocalories?: Use the reverse converter: 1 British thermal unit equals 0.252164 kcal.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.