How to convert kilograms-force to pounds-force
To convert a measurement in kilograms-force to pounds-force, multiply the value by 2.204623. The conversion factor comes from the relationship between both units and the newton.
For example, to convert 5 kgf to pounds-force: 5 × 2.204623 = 11.023113 lbf.
What is a kilogram-force?
A kilogram-force is the force exerted by gravity on a mass of one kilogram under standard gravity, equal to exactly 9.80665 newtons. The kilogram-force (also called the kilopond) was common in older metric engineering before the SI newton became standard. It is still encountered in tire pressure, thrust, and legacy technical documents.
Common uses of kilograms-force include: Legacy metric engineering documentation; Thrust ratings expressed in kgf (aviation); Spring and load-cell calibration; Everyday 'weight as force' descriptions.
What is a pound-force?
A pound-force is the force exerted by gravity on a mass of one avoirdupois pound under standard gravity, equal to exactly 4.4482216152605 newtons. The pound-force comes from the imperial and US customary systems, where the pound has historically served as both a unit of mass and of force. It remains standard in US engineering practice.
Common uses of pounds-force include: US mechanical and aerospace engineering; Torque and fastener tension specifications; Rocket and jet engine thrust ratings; Load ratings for hardware and fasteners.
When you need to convert kilograms-force to pounds-force
Comparing a metric weight rating to a US customary one — for example matching a 23 kgf baggage allowance to a pound-force spec — needs a kilogram-force to pound-force conversion, bridging the two 'weight as force' conventions directly.
Kilograms-force to pounds-force worked examples
Here are some common values converted:
1 kgf = 2.204623 lbf 5 kgf = 11.023113 lbf 10 kgf = 22.046226 lbf 50 kgf = 110.231131 lbf 100 kgf = 220.462262 lbf
Frequently asked questions
How many pounds-force are in one kilogram-force?
One kilogram-force (kgf) equals 2.204623 pounds-force (lbf). Multiply any value in kilograms-force by 2.204623 to convert to pounds-force.
How do I convert kilograms-force to pounds-force?
Multiply the value in kilograms-force by 2.204623. For example, 5 kgf × 2.204623 = 11.023113 lbf.
How do I convert pounds-force to kilograms-force?
Multiply the value in pounds-force by 0.45359237, or divide by 2.204623. Use the swap button on the converter above to reverse the direction.
Is the kilogram-force to pound-force conversion exact?
Force conversions use standard definitions: 1 kgf = 9.80665 N and 1 lbf = 4.4482216 N exactly.
What is the formula for kilograms-force to pounds-force?
The formula is: lbf = kgf × 2.204623. This comes from the definition of both units relative to the newton.