<Tr> <Th> CGS units </Th> <Td> 444,822.2 dyn </Td> </Tr> <Tr> <Th> Absolute English System </Th> <Td> 32.17405 pdl </Td> </Tr> <P> The pound - force (symbol: lbf, sometimes lb,) is a unit of force used in some systems of measurement including English Engineering units and the British Gravitational System . Pound force should not be confused with foot - pounds or pound - feet, which are units of torque, and may be written as "lbf ⋅ ft". They should not be confused with pound - mass (symbol: lb), often simply called pounds, which is a unit of mass . </P> <P> The pound - force is equal to the gravitational force exerted on a mass of one avoirdupois pound on the surface of Earth . Since the 18th century, the unit has been used in low - precision measurements, for which small changes in Earth's gravity (which varies from place to place by up to half a percent) can safely be neglected . </P>

Is pounds a unit of force or mass
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