About Units

Kilocalories: Kilocalories (kcal), also known as food calories, are equal to 1,000 small calories. This unit is commonly used in the context of food energy, with dietary energy intake and expenditure often measured in kilocalories.

Watt hours: Watt-hours (Wh) are a unit of energy equivalent to one watt of power used for one hour. This unit is commonly used to measure electrical energy consumption. For example, household electrical energy usage is often measured in kilowatt-hours (kWh), where 1 kWh equals 1,000 Wh.