Convert Calories to Million BTU

Enter the energy in calories below to get the value converted to million BTU.

Results in Million BTU:
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1 cal = 3.9657E-9 MMBTU

How to Convert Calories to Million BTU

To convert a calorie measurement to a million BTU measurement, multiply the energy by the conversion ratio. One calorie is equal to 3.9657E-9 million BTU, so use this simple formula to convert:

million BTU = calories × 3.9657E-9

The energy in million BTU is equal to the calories multiplied by 3.9657E-9.

For example, here's how to convert 5 calories to million BTU using the formula above.
5 cal = (5 × 3.9657E-9) = 1.9828E-8 MMBTU

Calories and million BTU are both units used to measure energy. Keep reading to learn more about each unit of measure.


One calorie is equal to the heat needed to raise the temperature of one gram of water from 14.5 to 15.5 degrees Celsius.

When measuring the energy content in foods, the large calorie, or kilocalorie is used, but it's often still just called a "calorie." When both the calorie and large calorie are used in the same context it is common to refer to the calorie as a "small calorie."

Calories can be abbreviated as cal, for example 1 calorie can be written as 1 cal.

Million BTU

One million BTU is a measure of heat energy equal to 1,000,000 BTU, which are equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit.

The million BTU is a US customary unit of energy. Million BTU can be abbreviated as MMBTU, for example 1 million BTU can be written as 1 MMBTU.

Calorie Measurements and Equivalent Million BTU Conversions

Common calorie values converted to the equivalent million BTU value
Calories Million BTU
1 cal 0.0000000039657 MMBTU
2 cal 0.0000000079313 MMBTU
3 cal 0.000000011897 MMBTU
4 cal 0.000000015863 MMBTU
5 cal 0.000000019828 MMBTU
6 cal 0.000000023794 MMBTU
7 cal 0.00000002776 MMBTU
8 cal 0.000000031725 MMBTU
9 cal 0.000000035691 MMBTU
10 cal 0.000000039657 MMBTU
11 cal 0.000000043622 MMBTU
12 cal 0.000000047588 MMBTU
13 cal 0.000000051554 MMBTU
14 cal 0.000000055519 MMBTU
15 cal 0.000000059485 MMBTU
16 cal 0.000000063451 MMBTU
17 cal 0.000000067416 MMBTU
18 cal 0.000000071382 MMBTU
19 cal 0.000000075348 MMBTU
20 cal 0.000000079313 MMBTU
21 cal 0.000000083279 MMBTU
22 cal 0.000000087245 MMBTU
23 cal 0.00000009121 MMBTU
24 cal 0.000000095176 MMBTU
25 cal 0.000000099142 MMBTU
26 cal 0.00000010311 MMBTU
27 cal 0.00000010707 MMBTU
28 cal 0.00000011104 MMBTU
29 cal 0.000000115 MMBTU
30 cal 0.00000011897 MMBTU
31 cal 0.00000012294 MMBTU
32 cal 0.0000001269 MMBTU
33 cal 0.00000013087 MMBTU
34 cal 0.00000013483 MMBTU
35 cal 0.0000001388 MMBTU
36 cal 0.00000014276 MMBTU
37 cal 0.00000014673 MMBTU
38 cal 0.0000001507 MMBTU
39 cal 0.00000015466 MMBTU
40 cal 0.00000015863 MMBTU

More Calorie Energy Conversions

Convert to Joules
1 cal is equal to 4.184 joules
Convert to Kilojoules
1 cal is equal to 0.004184 kilojoules
Convert to Megajoules
1 cal is equal to 4.184E-6 megajoules
Convert to Gigajoules
1 cal is equal to 4.184E-9 gigajoules
Convert to Kilocalories
1 cal is equal to 0.001 kilocalories
Convert to Megacalories
1 cal is equal to 1.0E-6 megacalories
Watts x Time
Convert to Watt-hours
1 cal is equal to 0.001162 watt-hours
Convert to Kilowatt-hours
1 cal is equal to 1.1622E-6 kilowatt-hours
Convert to Megawatt-hours
1 cal is equal to 1.1622E-9 megawatt-hours
Convert to Watt-seconds
1 cal is equal to 4.184 watt-seconds
Thermal Units
Convert to British Thermal Units
1 cal is equal to 0.003966 british thermal units
Convert to Therms
1 cal is equal to 3.9657E-8 therms
Convert to Quads
1 cal is equal to 3.9657E-18 quads
Convert to Electronvolts
1 cal is equal to 26,114,000,000,000,000,000 electronvolts
Convert to Kiloelectronvolts
1 cal is equal to 26,114,000,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 cal is equal to 26,114,475,092,200.6 megaelectronvolts