Convert Kilocalories to British Thermal Units

Enter the energy in kilocalories below to get the value converted to british thermal units.

Results in British Thermal Units:
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1 kcal = 3.965667 BTU

How to Convert Kilocalories to British Thermal Units

To convert a kilocalorie measurement to a british thermal unit measurement, multiply the energy by the conversion ratio. One kilocalorie is equal to 3.965667 british thermal units, so use this simple formula to convert:

british thermal units = kilocalories × 3.965667

The energy in british thermal units is equal to the kilocalories multiplied by 3.965667.

For example, here's how to convert 5 kilocalories to british thermal units using the formula above.
5 kcal = (5 × 3.965667) = 19.828334 BTU

Kilocalories and british thermal units are both units used to measure energy. Keep reading to learn more about each unit of measure.


One kilocalorie, is equal to the heat needed to raise the temperature of one kilogram of water from 14.5 to 15.5 degrees Celsius.

Kilocalories can be abbreviated as kcal, for example 1 kilocalorie can be written as 1 kcal.

When being used to measure nutrition or metabolic processes, the large calorie is used, which is equal to one kilocalorie.

British Thermal Units

British thermal units are a measure of heat energy. Specifically, one british thermal unit is equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit. They are often used as a way to rate the energy heat producing appliances such furnaces, and to price heating fuels such as natural gas.

The british thermal unit is a US customary unit of energy. British thermal units can be abbreviated as BTU, for example 1 british thermal unit can be written as 1 BTU.

Kilocalorie Measurements and Equivalent British Thermal Unit Conversions

Common kilocalorie values converted to the equivalent british thermal unit value
Kilocalories British Thermal Units
1 kcal 3.9657 BTU
2 kcal 7.9313 BTU
3 kcal 11.9 BTU
4 kcal 15.86 BTU
5 kcal 19.83 BTU
6 kcal 23.79 BTU
7 kcal 27.76 BTU
8 kcal 31.73 BTU
9 kcal 35.69 BTU
10 kcal 39.66 BTU
11 kcal 43.62 BTU
12 kcal 47.59 BTU
13 kcal 51.55 BTU
14 kcal 55.52 BTU
15 kcal 59.49 BTU
16 kcal 63.45 BTU
17 kcal 67.42 BTU
18 kcal 71.38 BTU
19 kcal 75.35 BTU
20 kcal 79.31 BTU
21 kcal 83.28 BTU
22 kcal 87.24 BTU
23 kcal 91.21 BTU
24 kcal 95.18 BTU
25 kcal 99.14 BTU
26 kcal 103.11 BTU
27 kcal 107.07 BTU
28 kcal 111.04 BTU
29 kcal 115 BTU
30 kcal 118.97 BTU
31 kcal 122.94 BTU
32 kcal 126.9 BTU
33 kcal 130.87 BTU
34 kcal 134.83 BTU
35 kcal 138.8 BTU
36 kcal 142.76 BTU
37 kcal 146.73 BTU
38 kcal 150.7 BTU
39 kcal 154.66 BTU
40 kcal 158.63 BTU

More Kilocalorie Energy Conversions

Convert to Joules
1 kcal is equal to 4,184 joules
Convert to Kilojoules
1 kcal is equal to 4.184 kilojoules
Convert to Megajoules
1 kcal is equal to 0.004184 megajoules
Convert to Gigajoules
1 kcal is equal to 4.184E-6 gigajoules
Convert to Calories
1 kcal is equal to 1,000 calories
Convert to Megacalories
1 kcal is equal to 0.001 megacalories
Watts x Time
Convert to Watt-hours
1 kcal is equal to 1.162222 watt-hours
Convert to Kilowatt-hours
1 kcal is equal to 0.001162 kilowatt-hours
Convert to Megawatt-hours
1 kcal is equal to 1.1622E-6 megawatt-hours
Convert to Watt-seconds
1 kcal is equal to 4,184 watt-seconds
Thermal Units
Convert to Million BTU
1 kcal is equal to 3.9657E-6 million BTU
Convert to Therms
1 kcal is equal to 3.9657E-5 therms
Convert to Quads
1 kcal is equal to 3.9657E-15 quads
Convert to Electronvolts
1 kcal is equal to 26,113,999,999,999,999,475,712 electronvolts
Convert to Kiloelectronvolts
1 kcal is equal to 26,114,000,000,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 kcal is equal to 26,114,000,000,000,000 megaelectronvolts