# Convert newtons to lbs

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

### 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

**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 to Pound-force Conversion Table

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

0.01 N | 0.0022480894 lbf |

0.1 N | 0.0224808943 lbf |

1 N | 0.2248089431 lbf |

2 N | 0.4496178862 lbf |

3 N | 0.6744268293 lbf |

5 N | 1.1240447155 lbf |

10 N | 2.248089431 lbf |

20 N | 4.496178862 lbf |

50 N | 11.240447155 lbf |

100 N | 22.48089431 lbf |

1000 N | 224.8089431 lbf |

### How to Convert Newton to Pound-force

1 N = 0.2248089431 lbf

1 lbf = 4.4482216153 N

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

15 N = 15 × 0.2248089431 lbf = 3.3721341465 lbf