Joule Joule John W. Campbell Category="SI derived units"Category="Units of energy"The joule (symbol: J) is the SI unit of Energy, or work. It is named in honor of the physicist James Prescott Joule (1818-1889).

Definition

The joule is a derived unit defined as the work done, or energy required, to exert a Force of one Newton for a distance of one Metre, so the same quantity may be referred to as a newton metre or newton-metre (also with meter spelling), with the symbol N·m or N m. It can also be written as kg·m2·s−2. However, the newton metre is usually used as a measure of Torque, not energy.

One joule is also:

Conversions

1 joule is equal to:

See also