Direct conversion
Convert calorie [cal] to kilowatt-hour [kWh] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 calorie [cal] = 0.000001 kilowatt-hour [kWh]
1 calorie [cal] = 0.000001 kilowatt-hour [kWh]
Example: 1 calorie [cal] equals 0.000001 kilowatt-hour [kWh].
Energy conversions use joule as the reference unit, including electrical, thermal, nutrition, and mechanical energy units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The calorie is an energy unit traditionally based on heating water by one degree Celsius.
HistoryCalories were used in heat measurement before joules became the SI standard.
Current useCalories are used in nutrition, food labels, exercise estimates, and diet planning.
The kilowatt-hour is an energy unit equal to the energy used by one kilowatt of power for one hour.
HistoryKilowatt-hours became common through electric utility metering and billing.
Current useKilowatt-hours are used for electricity bills, batteries, appliances, solar systems, and energy planning.
| calorie [cal] | kilowatt-hour [kWh] |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 5 | 0.000006 |
| 10 | 0.000012 |
| 20 | 0.000023 |
| 25 | 0.000029 |
| 50 | 0.000058 |
| 100 | 0.000116 |
| 1000 | 0.001162 |
Use this formula: 1 calorie [cal] = 0.000001 kilowatt-hour [kWh] Enter your value in the calculator and the result updates instantly.
1 calorie [cal] equals 0.000001 kilowatt-hour [kWh].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.