Convert Calories to Kilowatt-hours
cal to kWh · energy conversion
What are calories and kilowatt-hours?
A small calorie is the energy to heat one gram of water by 1 °C, about 4.184 J. A kilowatt-hour is 1,000 watt-hours, the unit electric utilities bill by. For reference: a food Calorie is one kilocalorie (4,184 J), and home electricity is billed in kilowatt-hours.
How to convert calories to kilowatt-hours
1 cal = 0.00000116222 kWh. To convert, multiply the number of calories by 0.00000116222. For example, 5 cal = 0.00000581111 kWh, and 20 cal = 0.0000232444 kWh. To go the other way, multiply kilowatt-hours by 860,421 (since 1 kWh = 860,421 cal).
Calories to Kilowatt-hours conversion table
| Calories (cal) | Kilowatt-hours (kWh) |
|---|---|
| 1 | 0.00000116222 |
| 10 | 0.0000116222 |
| 100 | 0.000116222 |
| 500 | 0.000581111 |
| 1,000 | 0.00116222 |
| 2,000 | 0.00232444 |
| 5,000 | 0.00581111 |
FAQ
What is 1 cal in kWh?
1 cal = 0.00000116222 kWh. To convert any amount, multiply the number of calories by 0.00000116222.
How do I convert kilowatt-hours back to calories?
Go the other way: 1 kWh = 860,421 cal, so multiply kilowatt-hours by 860,421 to get calories.
Is a calorie bigger than a kilowatt-hour?
No — 1 cal is the smaller unit, equal to 0.00000116222 kWh (it takes 860,421 cal to make one kWh).
Are these energy conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.