Convert Calories to Watt-hours

Enter the energy in calories below to get the value converted to watt-hours.

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Results in Watt-hours:
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1 cal = 0.001162 Wh

How to Convert Calories to Watt-hours

To convert a calorie measurement to a watt-hour measurement, multiply the energy by the conversion ratio. One calorie is equal to 0.001162 watt-hours, so use this simple formula to convert:

watt-hours = calories × 0.001162

The energy in watt-hours is equal to the calories multiplied by 0.001162.

For example, here's how to convert 5 calories to watt-hours using the formula above.
5 cal = (5 × 0.001162) = 0.005811 Wh

Calories and watt-hours 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.

Watt-hours

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours can be abbreviated as Wh, for example 1 watt-hour can be written as 1 Wh.

Calorie Measurements and Equivalent Watt-hour Conversions

Common calorie values converted to the equivalent watt-hour value
Calories Watt-hours
1 cal 0.001162 Wh
2 cal 0.002324 Wh
3 cal 0.003487 Wh
4 cal 0.004649 Wh
5 cal 0.005811 Wh
6 cal 0.006973 Wh
7 cal 0.008136 Wh
8 cal 0.009298 Wh
9 cal 0.01046 Wh
10 cal 0.011622 Wh
11 cal 0.012784 Wh
12 cal 0.013947 Wh
13 cal 0.015109 Wh
14 cal 0.016271 Wh
15 cal 0.017433 Wh
16 cal 0.018596 Wh
17 cal 0.019758 Wh
18 cal 0.02092 Wh
19 cal 0.022082 Wh
20 cal 0.023244 Wh
21 cal 0.024407 Wh
22 cal 0.025569 Wh
23 cal 0.026731 Wh
24 cal 0.027893 Wh
25 cal 0.029056 Wh
26 cal 0.030218 Wh
27 cal 0.03138 Wh
28 cal 0.032542 Wh
29 cal 0.033704 Wh
30 cal 0.034867 Wh
31 cal 0.036029 Wh
32 cal 0.037191 Wh
33 cal 0.038353 Wh
34 cal 0.039516 Wh
35 cal 0.040678 Wh
36 cal 0.04184 Wh
37 cal 0.043002 Wh
38 cal 0.044164 Wh
39 cal 0.045327 Wh
40 cal 0.046489 Wh

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 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 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