Convert pound-force to ton-force (long)
Please provide values below to convert pound-force [lbf] to ton-force (long) [tonf (UK)], or Convert ton-force (long) to pound-force.
How to Convert Pound-Force to Ton-Force (Long)
1 lbf = 0.000446428571822847 tonf (UK)
Example: convert 15 lbf to tonf (UK):
15 lbf = 15 × 0.000446428571822847 tonf (UK) = 0.00669642857734271 tonf (UK)
Pound-Force to Ton-Force (Long) Conversion Table
| pound-force | ton-force (long) |
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Pound-Force
Pound-force (lbf) is a unit of force in the imperial system, defined as the force required to accelerate a one-pound mass at a rate of 32.174 feet per second squared.
History/Origin
The pound-force originated from the British Imperial system and has been used historically in engineering and physics to quantify force, especially in the United States and the UK, before the widespread adoption of the SI system.
Current Use
Today, pound-force is primarily used in the United States and some other countries for engineering, manufacturing, and mechanical applications where imperial units are still prevalent, often in contexts like specifying engine torque or structural loads.
Ton-Force (Long)
A unit of force equal to the force exerted by one long ton (2,240 pounds) under standard gravity, approximately 20,000 pounds-force.
History/Origin
The ton-force (long) originated from the use of the long ton in the UK, primarily for engineering and maritime purposes, before the adoption of SI units. It was used to measure force in contexts where imperial units were standard.
Current Use
The ton-force (long) is largely obsolete in modern scientific and engineering contexts, replaced by the newton. It may still be used in some historical or niche applications within the UK or in legacy systems.