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Kilogram-force (kgf)

Force of standard gravity on one kilogram: exactly 9.80665 newtons.

What is a kilogram-force?

Symbol
kgf
Quantity
Force
Unit system
metric
Definition
Force of standard gravity on one kilogram: exactly 9.80665 newtons.
Exact
Yes, the value is exact by definition
Source
NIST Special Publication 811 (2008), Appendix B.8

Common applications

A non-SI unit still common on scales, testing machines and older engineering documents. Also called kilopond.

Kilogram-force in other force units

Kilogram-force quick reference

Kilogram-force in other units
Kilogram-forceNewtonKilonewtonPound-force
1 kgf= 9.80665 N= 0.00980665 kN≈ 2.204622622 lbf
10 kgf= 98.0665 N= 0.0980665 kN≈ 22.04622622 lbf
100 kgf= 980.665 N= 0.980665 kN≈ 220.4622622 lbf
1000 kgf= 9806.65 N= 9.80665 kN≈ 2204.622622 lbf

Where the kilogram-force fits

The next smaller force unit is the pound-force (lbf). 1 kgf ≈ 2.204622622 lbf, and 1 lbf = 0.45359237 kgf.

The next larger force unit is the kilonewton (kN). 1 kgf = 0.00980665 kN, and 1 kN ≈ 101.9716213 kgf.

Frequently asked questions

How many newtons are in one kilogram-force?
One kilogram-force = 9.80665 N (newtons).
How many kilonewtons are in one kilogram-force?
One kilogram-force = 0.00980665 kN (kilonewtons).
How many pounds-force are in one kilogram-force?
One kilogram-force ≈ 2.204622622 lbf (pounds-force).