A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
Kilowatt hours to Calories
Convert Kilowatt-hour (kWh) to Calorie (cal) instantly with an exact formula, conversion table, and FAQ.
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Convert kilowatt hours (kWh) to calories (cal) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
cal = kWh × 860420.6501
Results update instantly for Kilowatt hours to Calories conversions.
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Formula
cal = kWh × 860420.6501
kWh = cal × 0.000001162222222
Conversion table
| 1 kWh | 860420.650096 cal |
| 5 kWh | 4.302103e+06 cal |
| 10 kWh | 8.604207e+06 cal |
| 20 kWh | 1.720841e+07 cal |
| 50 kWh | 4.302103e+07 cal |
| 100 kWh | 8.604207e+07 cal |
| 500 kWh | 4.302103e+08 cal |
| 1000 kWh | 8.604207e+08 cal |
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How the formula works
Both kilowatt-hour and calorie measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilowatt hours by 860420.6501 to get calories. To reverse the conversion, multiply a calorie value by 0.000001162222222 to get back to kilowatt hours.
Frequently asked questions
What is Kilowatt-hour (kWh)?
A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
What is Calorie (cal)?
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
How do I convert kilowatt hours to calories?
Multiply the kilowatt-hour value by 860420.6501 to get the equivalent in calories. For example, 5 kWh × 860420.6501 = 4.302103e+06 cal.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 860420.6501 is an exact, non-rounded value.
Can I convert calories back to kilowatt hours?
Yes. Divide the calorie value by 860420.6501, or multiply it by 0.000001162222222, to get kilowatt hours.
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About converting kilowatt hours to calories
A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour. A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
Use this calculator to move between kilowatt hours and calories accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.