How many watt-hours are in 1 calorie?

1 calorie equals 0.00116222 Wh.

How do I convert watt-hours back to calories?

Use the reverse converter: 1 watt-hour equals 860.421 cal.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert calories to watt-hours, multiply the value by 0.00116222222.

Wh = cal × 0.00116222222

40 cal × 0.00116222222 = 0.04649 Wh

Calorie (cal): The thermochemical calorie is exactly 4.184 joules, historically the heat to warm one gram of water by 1 °C.
Watt-hour (Wh): Used for battery capacity. Equal to 3,600 joules.

How do I convert calories to watt-hours?: To convert calories to watt-hours, multiply the value by 0.00116222222.
How many watt-hours are in 1 calorie?: 1 calorie equals 0.00116222 Wh.
How many watt-hours are in 10 calories?: 10 cal equals 0.0116222 Wh.
How do I convert watt-hours back to calories?: Use the reverse converter: 1 watt-hour equals 860.421 cal.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.