How to convert calories to kilowatt-hours
To convert calories to kilowatt-hours, multiply the value by the conversion factor 0.0000011622. To go the other way, multiply by 860,421 (or divide by 0.0000011622).
Worked example: 25 cal to kWh
- Write the value: 25 cal
- Multiply by 0.0000011622: 25 × 0.0000011622
- Result: 0.0000290556 kWh
Calorie to Kilowatt-hour conversion table
Quick reference values, rounded to 6 significant digits.
| Calorie (cal) | Kilowatt-hour (kWh) |
|---|---|
| 0.1 cal | 1.1622e-7 kWh |
| 0.25 cal | 2.9056e-7 kWh |
| 0.5 cal | 5.8111e-7 kWh |
| 1 cal | 0.0000011622 kWh |
| 2 cal | 0.0000023244 kWh |
| 3 cal | 0.0000034867 kWh |
| 4 cal | 0.0000046489 kWh |
| 5 cal | 0.0000058111 kWh |
| 6 cal | 0.0000069733 kWh |
| 7 cal | 0.0000081356 kWh |
| 8 cal | 0.0000092978 kWh |
| 9 cal | 0.00001046 kWh |
| 10 cal | 0.0000116222 kWh |
| 12 cal | 0.0000139467 kWh |
| 15 cal | 0.0000174333 kWh |
| 20 cal | 0.0000232444 kWh |
| 25 cal | 0.0000290556 kWh |
| 30 cal | 0.0000348667 kWh |
| 40 cal | 0.0000464889 kWh |
| 50 cal | 0.0000581111 kWh |
| 75 cal | 0.0000871667 kWh |
| 100 cal | 0.000116222 kWh |
| 250 cal | 0.000290556 kWh |
| 500 cal | 0.000581111 kWh |
| 1,000 cal | 0.00116222 kWh |
Kilowatt-hour to Calorie
| kWh | cal |
|---|---|
| 1 kWh | 860,421 cal |
| 5 kWh | 4,302,103 cal |
| 10 kWh | 8,604,207 cal |
| 50 kWh | 43,021,033 cal |
| 100 kWh | 86,042,065 cal |
1 Calorie in other energy units
About Calorie and Kilowatt-hour
What is a calorie (cal)?
A small calorie is the energy to raise 1 g of water by 1 °C (4.184 J).
What is a kilowatt-hour (kWh)?
A kilowatt-hour (one "unit" on your electricity bill) equals 3.6 million joules.
Where calorie to kilowatt-hour conversion is used
Energy conversions are needed for electricity bills, food calories, heating, batteries and physics. Converting between calories and kilowatt-hours is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Energy Converter.
Frequently asked questions
How many kilowatt-hours are in 1 calorie?
1 Calorie equals 0.0000011622 kWh.
How do I convert calories to kilowatt-hours?
Multiply the number of calories by 0.0000011622. For example, 25 cal × 0.0000011622 = 0.0000290556 kWh.
What is 25 cal in kWh?
25 cal = 0.0000290556 kWh.
How many calories are in 1 kilowatt-hour?
1 Kilowatt-hour equals 860,421 cal. Use the kWh to Calories converter for the reverse direction.
Is this Calorie to Kilowatt-hour converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.