Convert pound-force [lbf] to ton-force (long) [tonf (UK)] 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 lb×9.80665 m/s24.44822 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.



Ton-Force (Long) [tonf (UK)]


The long ton-force (also called the UK ton-force) is a unit of force based on the long ton, traditionally used in the United Kingdom.



  • A long ton equals 2,240 pounds (lbs).



  • The long ton-force is the force exerted by a long ton mass under standard gravity.



  • Mathematically:



1 tonf (UK)=2,240 lbs×9.80665 m/s29,964.02 newtons1 \text{ tonf (UK)} = 2,240 \text{ lbs} \times 9.80665 \text{ m/s}^2 \approx 9,964.02 \text{ newtons}

  • It is used in engineering and industries where the long ton is the standard measure of mass.



  • This unit is larger than the short ton-force and differs from the metric ton-force.



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