Convert pound-force [lbf] to newton [N] Online | Free force Converter

Pound-Force [lbf]


Pound-force (lbf) is a unit of force commonly used in the United States and some other countries using the Imperial system.



  • It is defined as the force exerted by gravity on a mass of one pound (lb) under standard Earth gravity.



  • Mathematically:



1 lbf=1 lbร—9.80665 m/s2โ‰ˆ4.44822 newtons1 \text{ lbf} = 1 \text{ lb} \times 9.80665 \text{ m/s}^2 \approx 4.44822 \text{ newtons}

  • Pound-force is widely used in engineering, mechanics, and everyday contexts in countries that use Imperial or US customary units.



  • It measures force similarly to how newtons do in the metric system but based on pounds instead of kilograms.



Newton [N]


The newton (N) is the SI unit of force.



  • It is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.



  • Mathematically:



1 N=1 kgโ‹…m/s21 \text{ N} = 1 \text{ kg} \cdot \text{m/s}^2

  • Named after Sir Isaac Newton for his work on classical mechanics.



  • Commonly used to measure forces such as weight, tension, and thrust in physics and engineering.



Example: The weight of a 1 kg mass under Earth's gravity is approximately 9.8 N.



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