Convert Calories to Kilocalories

Enter the energy in calories below to get the value converted to kilocalories.

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1 cal = 0.001 kcal

How to Convert Calories to Kilocalories

To convert a calorie measurement to a kilocalorie measurement, multiply the energy by the conversion ratio. One calorie is equal to 0.001 kilocalories, so use this simple formula to convert:

kilocalories = calories × 0.001

The energy in kilocalories is equal to the calories multiplied by 0.001.

For example, here's how to convert 5 calories to kilocalories using the formula above.
5 cal = (5 × 0.001) = 0.005 kcal

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

Calories

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.

Kilocalories

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.

Calorie Measurements and Equivalent Kilocalorie Conversions

Common calorie values converted to the equivalent kilocalorie value
Calories Kilocalories
1 cal 0.001 kcal
2 cal 0.002 kcal
3 cal 0.003 kcal
4 cal 0.004 kcal
5 cal 0.005 kcal
6 cal 0.006 kcal
7 cal 0.007 kcal
8 cal 0.008 kcal
9 cal 0.009 kcal
10 cal 0.01 kcal
11 cal 0.011 kcal
12 cal 0.012 kcal
13 cal 0.013 kcal
14 cal 0.014 kcal
15 cal 0.015 kcal
16 cal 0.016 kcal
17 cal 0.017 kcal
18 cal 0.018 kcal
19 cal 0.019 kcal
20 cal 0.02 kcal
21 cal 0.021 kcal
22 cal 0.022 kcal
23 cal 0.023 kcal
24 cal 0.024 kcal
25 cal 0.025 kcal
26 cal 0.026 kcal
27 cal 0.027 kcal
28 cal 0.028 kcal
29 cal 0.029 kcal
30 cal 0.03 kcal
31 cal 0.031 kcal
32 cal 0.032 kcal
33 cal 0.033 kcal
34 cal 0.034 kcal
35 cal 0.035 kcal
36 cal 0.036 kcal
37 cal 0.037 kcal
38 cal 0.038 kcal
39 cal 0.039 kcal
40 cal 0.04 kcal

More Calorie Energy Conversions

Joules
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
Calories
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 Million BTU
1 cal is equal to 3.9657E-9 million BTU
Convert to Therms
1 cal is equal to 3.9657E-8 therms
Convert to Quads
1 cal is equal to 3.9657E-18 quads
Electronvolts
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