How to convert kilocalories to kilowatt-hours
To convert a measurement in kilocalories to kilowatt-hours, multiply the value by 0.001162222222. The conversion factor comes from the relationship between both units and the joule.
For example, to convert 5 kcal to kilowatt-hours: 5 × 0.001162222222 = 0.005811111111 kWh.
What is a kilocalorie?
A kilocalorie equals 1,000 small calories, or exactly 4,184 joules, and is the 'Calorie' shown on food nutrition labels. The food Calorie (capital C) is actually a kilocalorie. This convention, established in nutrition science, means a 500-Calorie meal contains 500 kilocalories, or about 2,092 kilojoules.
Common uses of kilocalories include: Food energy (the dietary 'Calorie'); Metabolism and exercise burn estimates; Nutrition and diet planning; Bomb-calorimetry food testing.
What is a kilowatt-hour?
A kilowatt-hour equals 1,000 watt-hours, or 3.6 million joules, and is the standard unit for billing electrical energy. The kilowatt-hour became the universal unit of electricity metering because it conveniently expresses household consumption. Running a 1,000-watt appliance for one hour uses exactly one kWh.
Common uses of kilowatt-hours include: Household electricity billing; Electric vehicle battery capacity; Home solar and battery systems; Energy audits and efficiency ratings.
Kilocalories to kilowatt-hours worked examples
Here are some common values converted:
1 kcal = 0.001162222222 kWh 5 kcal = 0.005811111111 kWh 10 kcal = 0.011622222222 kWh 50 kcal = 0.058111111111 kWh 100 kcal = 0.116222222222 kWh
Frequently asked questions
How many kilowatt-hours are in one kilocalorie?
One kilocalorie (kcal) equals 0.001162222222 kilowatt-hours (kWh). Multiply any value in kilocalories by 0.001162222222 to convert to kilowatt-hours.
How do I convert kilocalories to kilowatt-hours?
Multiply the value in kilocalories by 0.001162222222. For example, 5 kcal × 0.001162222222 = 0.005811111111 kWh.
How do I convert kilowatt-hours to kilocalories?
Multiply the value in kilowatt-hours by 860.42065, or divide by 0.001162222222. Use the swap button on the converter above to reverse the direction.
Is the kilocalorie to kilowatt-hour conversion exact?
The thermochemical calorie is defined as exactly 4.184 J and the BTU as 1055.056 J. Conversions between SI energy units are exact.
What is the formula for kilocalories to kilowatt-hours?
The formula is: kWh = kcal × 0.001162222222. This comes from the definition of both units relative to the joule.