# Pound (force)

## Earth's gravitational pull on a one-pound mass / From Wikipedia, the free encyclopedia

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The **pound of force** or **pound-force** (symbol: **lbf**,[1] sometimes **lb _{f}**,[2]) is a unit of force used in some systems of measurement, including English Engineering units[lower-alpha 1] and the foot–pound–second system.[3]

Earth's gravitational pull on a one-pound mass

**Quick facts: Pound-force, Unit system, Symbol, Conversions...**▼

Pound-force | |
---|---|

Unit system | English Engineering units, British Gravitational System |

Symbol | lbf |

Conversions | |

1 lbf in ... | ... is equal to ... |

SI units | 4.448222 N |

CGS units | 444,822.2 dyn |

Absolute English System | 32.17405 pdl |

Pound-force should not be confused with pound-mass (lb), often simply called *pound*, which is a unit of mass, nor should these be confused with foot-pound (ft⋅lbf), a unit of energy, or pound-foot (lbf⋅ft), a unit of torque.