Kilocalories to Watt-hours converter

To convert kilocalories to watt-hours, enter the value in the first field. The result in watt-hours is calculated automatically using the exact conversion factor.

1 kcal ≈ 1.16222222222 Wh
1 Wh ≈ 0.860420650096 kcal

Formula: Wh ≈ kcal × 1.16222222222
kcal ≈ Wh × 0.860420650096

Definitions: 1 kcal = 1000 cal; 1 Wh = 3600 J

The kilocalorie (kcal) is 1,000 calories, exactly 4,184 joules. It is the unit behind the Calories on food labels and is used for diet and exercise energy, especially in the United States and, next to kilojoules, in many other countries.

The watt-hour (Wh) is the energy of one watt working for one hour, exactly 3,600 joules. It is used for the capacity of phone, laptop and power bank batteries and for small amounts of electricity.

See the conversion table with commonly used values, handy for quick reference or study.