Pound-force to Kilogram-force

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Result

0.4536

kgf

Conversion rate: 1 lbf = 0.4536 kgf

Showing up to 4 decimal

How it works

The converter uses exact SI-based factors (e.g., 1 foot = 0.3048 meters, 1 inch = 0.0254 meters).

Formula: kilogram-forces = pound-force × 0.4536

Results show between 0 and 8 decimal places and hide trailing zeros for readability.

Conversion Table

Pound-force Kilogram-force
0.1 lbf 0.0454 kgf
1 lbf 0.4536 kgf
10 lbf 4.5359 kgf
100 lbf 45.3592 kgf
1000 lbf 453.5924 kgf

History

Pound-force (lbf)

The pound-force (lbf) is in the imperial system. It is the force gravity exerts on one pound of mass. Today, it is standardized to 4.44822 newtons. Pound-force has long been used in engineering, aviation, and the U.S. military. Despite the shift to metric, the pound-force (lbf) is still important in places that use imperial units. It is used in aerospace, engine performance, and mechanical testing. Its use demonstrates the enduring impact of imperial units.

Kilogram-force (kgf)

The kilogram-force, symbol kgf, defines a non-SI unit as the force Earth’s gravity exerts on one kilogram of mass at sea level, equal to 9.80665 newtons. Engineers and mechanics widely used it before the universal adoption of the SI. Today, users still find kilogram-force in older engineering documents, aviation, and certain regions. Its continued presence shows how mass-based and force-based units overlap, highlighting the transition from practical everyday measurements to the universal SI system.

Other Relevant Conversions

N → kN N → dyn N → kgf N → lbf kN → N kN → dyn kN → kgf kN → lbf dyn → N dyn → kN dyn → kgf dyn → lbf kgf → N kgf → kN kgf → dyn kgf → lbf lbf → N lbf → kN lbf → dyn lbf → kgf