Convert Watt-hour to Calorie (thermochemical)

One Wh equals 860.4206501 cal. This converter allows you to easily convert between Watt-hour and Calorie (thermochemical) in real time.

Formula

Wh × 860.4206501 = cal

Example: 1 Wh = 860.4206501 cal

What is Watt-hour?

The watt-hour is a unit of energy equal to 3,600 joules, representing the energy used by one watt of power over one hour. It is commonly used for portable battery capacities; a typical power bank rated at 5,000 mAh at 3.7 V holds about 18.5 Wh. Airline regulations for lithium-ion batteries are also specified in watt-hours, with batteries under 100 Wh generally permitted in carry-on luggage.

What is Calorie (thermochemical)?

The thermochemical calorie is a unit of energy originally defined as the amount needed to raise the temperature of one gram of water by one degree Celsius. It is exactly 4.184 joules. Note that the "Calorie" seen on food labels is actually a kilocalorie (1,000 calories). The calorie has deep roots in calorimetry and chemistry, and although the SI system favors joules, calories remain widely used in everyday discussions of food and diet.