How is energy measured?

Energy is typically measured in units such as joules (J) or kilowatt-hours (kWh). Joules are the standard unit of energy in the International System of Units (SI), while kilowatt-hours are commonly used to measure electrical energy consumption. Other units of energy include calories, British thermal units (BTUs), and electronvolts (eV).

Energy is measured in units called joules (J). The joule is named after the English physicist James Prescott Joule. One joule is equal to the energy transferred or work done when a force of one newton is applied over a distance of one meter in the direction of the force.