Kilocalories to BTU converter

To convert kilocalories to BTU, enter the value in the first field. The result in BTU is calculated automatically using the exact conversion factor.

1 kcal ≈ 3.96566683139 BTU
1 BTU ≈ 0.252164400722 kcal

Formula: BTU ≈ kcal × 3.96566683139
kcal ≈ BTU × 0.252164400722

Definitions: 1 kcal = 1000 cal; 1 BTU = 1055.05585262 J

The kilocalorie (kcal) is 1,000 calories, exactly 4,184 joules. It is the unit behind the Calories on food labels and is used for diet and exercise energy, especially in the United States and, next to kilojoules, in many other countries.

The British thermal unit (BTU) here is the International Table BTU, about 1,055 joules, roughly the energy needed to raise one pound of water by one degree Fahrenheit. It is used in the United States for heating and cooling equipment, fuel content and natural gas.

See the conversion table with commonly used values, handy for quick reference or study.