Convert Watt-hour to Erg (Wh to Erg)

Watt-hour (Wh) and Erg (Erg) are both units of energy. With the conversion form below, you can effortlessly and accurately convert watt-hour to erg. This free online calculator tool makes it simple and easy to perform the conversion from Wh unit to the Erg unit.

Energy is the capacity of a physical system to do work or produce heat. The SI unit is the joule (J), defined as the work done when a force of one newton is applied over one meter (1 J = 1 N·m = 1 kg·m²/s²). Other important units include the kilowatt-hour (kWh)—used on electricity bills (1 kWh = 3.6 MJ)—the calorie (cal)—used in nutrition (1 food Calorie = 1 kcal = 4,184 J)—and the electronvolt (eV), used in atomic and particle physics (1 eV = 1.602 × 10⁻¹⁹ J).

A watt-hour (Wh) is a unit of electrical energy equal to one watt of power consumed for one hour. The watt-hour is the standard energy unit in electrical engineering, utility billing, and appliance labeling. Electricity meters on homes measure consumption in watt-hours (or kilowatt-hours for larger quantities). Household appliances specify energy consumption in watt-hours per day or per year. The watt-hour integrates naturally with power measurements (watts) and time duration (hours), making it intuitive for engineers and accessible for consumers understanding their electricity bills.

Erg (symbol: erg) is a unit of energy in the centimeter-gram-second (CGS) system, equal to 1 × 10^-7 joule. Although largely replaced by SI units, the erg still appears in astrophysics, older scientific literature, and some fields of physics. Learn more about erg.