Skip to content
UnitChart

Convert BTU to kilocalories

British thermal units to kilocalories. Enter a value to convert, or use the BTU to kilocalories chart further down the page.

1 BTU = 0.2521644007 kcal

1 British thermal unit equals 0.2521644007 kilocalories. Going the other way, 1 kilocalorie = 3.965666831 British thermal units.

Permalink to this conversion

Check this before you rely on it. This converter is provided free and without warranty, and its results are not professional advice.

How to convert BTU to kilocalories

To convert British thermal units to kilocalories, multiply the British thermal unit value by 0.2521644007. You can also divide by 3.965666831 to get the same answer.

kcal = BTU × 0.2521644007

Worked example

Convert 15 BTU to kilocalories:

15 BTU = 3.782466011 kcal

BTU to kilocalories conversion chart

Use this BTU to kilocalories table for quick reference without typing anything.

BTU to kilocalories conversion table
British thermal units (BTU)kilocalories (kcal)
0.01 BTU0.002521644007 kcal
0.1 BTU0.02521644007 kcal
1 BTU0.2521644007 kcal
2 BTU0.5043288014 kcal
3 BTU0.7564932022 kcal
5 BTU1.260822004 kcal
10 BTU2.521644007 kcal
20 BTU5.043288014 kcal
50 BTU12.60822004 kcal
100 BTU25.21644007 kcal
1,000 BTU252.1644007 kcal

What is a British thermal unit?

The BTU is the energy needed to raise one pound of water by one degree Fahrenheit — about 1,055 joules. It rates heating and air-conditioning equipment in the US.

What is a kilocalorie?

The kilocalorie, written kcal or capital-C Calorie, is 1,000 thermochemical calories — the unit meant by “calories” on food packaging.

Frequently asked questions

How many kilocalories are in a British thermal unit?

1 BTU equals 0.2521644007 kilocalories. Going the other way, 1 kilocalories is 3.965666831 BTU.

How do you convert BTU to kilocalories?

To convert British thermal units to kilocalories, multiply the British thermal unit value by 0.2521644007. You can also divide by 3.965666831 to get the same answer.

What is 10 BTU in kilocalories?

10 BTU equals 2.521644007 kilocalories. The conversion chart on this page lists the other values people look up most often.

Related energy conversions

Convert BTU to other units

Convert other units to kilocalories

Popular conversions

cm to inchesinches to cmkg to lbslbs to kgCelsius to FahrenheitFahrenheit to Celsiusmm to inchesinches to mmkm to milesmiles to kmmeters to feetfeet to meterscm to feetfeet to inchesinches to feetml to fl ozfl oz to mlliters to gallonsgallons to literscups to ml