About Units

Calories: Calories (cal) are a unit of energy. Specifically, they are defined as the amount of heat needed to raise the temperature of one gram of water by one degree Celsius. In nutrition, calories measure the energy content of food, with 1 food calorie (kcal) being equal to 1,000 small calories.

Kilowatt hours: Kilowatt-hours (kWh) are equal to 1,000 watt-hours. This unit is commonly used for measuring electrical energy consumption, especially in household and industrial contexts. Electric utility companies use kilowatt-hours to measure and bill for energy consumption.