Glossary

Kilonewton, abbreviated kN, is a metric unit of force equal to 1,000 newtons. It is commonly used in engineering, construction, rigging, structural design, testing, and fastener applications to describe large forces without writing long numbers.

The conversion is:

1 kN = 1,000 N

A newton is the SI unit of force. One newton is the force needed to accelerate a 1-kilogram mass at 1 meter per second squared. So a kilonewton is simply one thousand of those units.

For rough practical comparison:

1 kN ≈ 224.8 pounds-force
10 kN ≈ 2,248 pounds-force
100 kN ≈ 22,480 pounds-force

In fastener and industrial applications, kilonewtons are often used to express tensile load, clamp load, proof load, shear load, breaking strength, test force, or working load. For example, a bolt, anchor, lifting component, or structural connector may be rated or tested in kilonewtons to show how much force it can withstand.

A kilonewton is similar in purpose to a kip, but from the metric side of the toolbox. A kip equals 1,000 pounds-force, while a kilonewton equals 1,000 newtons. For conversion:

1 kip ≈ 4.448 kN
1 kN ≈ 0.225 kip

In simple terms, a kilonewton is a clean metric way to talk about big forces. Instead of saying a fastener can handle 25,000 newtons, you can say it can handle 25 kN.