# Convert lbs to newtons

Please provide values below to convert pound-force [lbf] to newton [N], or *vice versa*.

### Pound-force

**Definition:** The pound-force (symbol: lbf) is a unit of force used in the English Engineering System and the British Gravitational System. It is defined as the gravitational force exerted on a mass of one avoirdupois pound under the condition of standard gravity (9.80665 m/s^{2}). Under this definition, with mass in terms of slugs, one pound-force is equal to 1 slug·foot/second^{2}.

**History/origin:** The pound-force is part of the foot-pound-second (FPS) system of units. Until 1901, when the General Conference of Weights and Measures adopted a standard acceleration due to gravity of 9.80665 m/s^{2}, the pound-force was not precisely defined.

**Current use:** After the adoption of the International System of Units (SI), the newton, an SI derived unit of force, became the preferred unit of measurement of force. Although the pound-force may still be used in certain contexts, it is not a widely used unit of measurement.

### Newton

**Definition:** The newton (symbol: N) is the SI (International System of Units) derived unit of force. It is defined as 1 kilogram·meter/second^{2}.

**History/origin:** The unit newton is named after Isaac Newton for his contribution to classical mechanics – particularly his second law of motion, which states that the rate of change of momentum of a body is directly proportional to the applied force, and that this change in momentum occurs in the direction of the applied force.

**Current use:** As an SI derived unit of force, the newton is the preferred unit of force, and is widely used in scientific contexts, particularly in physics. In everyday use, units such as the pound-force are sometimes used in place of newtons in countries like the United States.

### Pound-force to Newton Conversion Table

Pound-force [lbf] | Newton [N] |
---|---|

0.01 lbf | 0.0444822162 N |

0.1 lbf | 0.4448221615 N |

1 lbf | 4.4482216153 N |

2 lbf | 8.8964432305 N |

3 lbf | 13.3446648458 N |

5 lbf | 22.2411080763 N |

10 lbf | 44.4822161525 N |

20 lbf | 88.9644323051 N |

50 lbf | 222.4110807627 N |

100 lbf | 444.8221615255 N |

1000 lbf | 4448.2216152548 N |

### How to Convert Pound-force to Newton

1 lbf = 4.4482216153 N

1 N = 0.2248089431 lbf

**Example:** convert 15 lbf to N:

15 lbf = 15 × 4.4482216153 N = 66.7233242288 N