Calories to Watt-hours
Convert calories (cal) to watt-hours (Wh). Type in either box; the other updates as you go.
How to convert calories to watt-hours
To convert calories to watt-hours, multiply the number of calories by 0.001162222222.
Example
Convert 5 calories to watt-hours:
Calorie to watt-hour conversion chart
| Calories (cal) | Watt-hours (Wh) |
|---|---|
| 1 cal | 0.001162222 Wh |
| 2 cal | 0.002324444 Wh |
| 3 cal | 0.003486667 Wh |
| 4 cal | 0.004648889 Wh |
| 5 cal | 0.005811111 Wh |
| 6 cal | 0.006973333 Wh |
| 7 cal | 0.008135556 Wh |
| 8 cal | 0.009297778 Wh |
| 9 cal | 0.01046 Wh |
| 10 cal | 0.01162222 Wh |
| 12 cal | 0.01394667 Wh |
| 15 cal | 0.01743333 Wh |
| 20 cal | 0.02324444 Wh |
| 25 cal | 0.02905556 Wh |
| 30 cal | 0.03486667 Wh |
| 40 cal | 0.04648889 Wh |
| 50 cal | 0.05811111 Wh |
| 60 cal | 0.06973333 Wh |
| 70 cal | 0.08135556 Wh |
| 75 cal | 0.08716667 Wh |
| 80 cal | 0.09297778 Wh |
| 90 cal | 0.1046 Wh |
| 100 cal | 0.1162222 Wh |
| 150 cal | 0.1743333 Wh |
| 200 cal | 0.2324444 Wh |
| 250 cal | 0.2905556 Wh |
| 500 cal | 0.5811111 Wh |
| 1,000 cal | 1.162222 Wh |
Going the other way? See the watt-hours to calories chart.
About the units
Calorie (cal)
A small calorie (thermochemical) is exactly 4.184 joules, the energy to warm one gram of water by about one degree Celsius.
Watt-hour (Wh)
A watt-hour is the energy of one watt for one hour, 3,600 joules. Batteries are rated in watt-hours.
Frequently asked questions
How many watt-hours are in a calorie?
There are 0.001162222222 watt-hours in a calorie.
How many calories are in a watt-hour?
There are 860.4206501 calories in a watt-hour.
How do you convert calories to watt-hours?
To convert calories to watt-hours, multiply the number of calories by 0.001162222222.
What is 5 calories in watt-hours?
5 calories equals 0.00581111 watt-hours.
Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.