Erg
Unit of energy
The erg is a unit of energy equal to 10⁻⁷ joules. It originated in the Centimetre–gram–second system of units. It has the symbol erg. The erg is not an SI unit. Its name is derived from ergon, a Greek word meaning 'work' or 'task'. Wikipedia
1 erg in: is equal to
British Gravitational System: 7.375621×10−8 ft⋅lbf
CGS base units: 1 cm2⋅g⋅s−2
Derivation: 1 erg = 1 dyn⋅cm
SI units: 10−7 J
Symbol: erg
Unit of: energy