Toolcroft

Force Converter - Newtons, Pounds-force, Kilogram-force & More

Unit Converters

Convert force units including newtons, kilonewtons, meganewtons, millinewtons, pound-force, ounce-force, gram-force, kilogram-force, dynes, and kips.

Equivalent values in all force units

Based on the current From value in Newton (N). Use a row to make that unit the From unit.

SI

  • Millinewton (mN)1000
  • Newton (N)Current input1
  • Kilonewton (kN)0.001
  • Meganewton (MN)0.000001

Imperial

  • Ounce-force (ozf)3.5969431
  • Pound-force (lbf)0.22480894
  • Kip (kip)0.00022480894

Other

  • Dyne (dyn)100000
  • Gram-force (pond) (gf)101.97162
  • Kilogram-force (kgf)0.10197162

Common force conversions

ValueEquivalent
1 N0.2248 lbf = 0.1020 kgf
1 lbf4.4482 N = 0.4536 kgf
1 kgf9.8067 N = 2.2046 lbf
1 kN1,000 N = 224.81 lbf
1 kip1,000 lbf = 4,448.2 N
1 dyne1 × 10⁻⁵ N
1 ozf0.27801385 N = 0.0625 lbf
1 gf (pond)0.00980665 N
1 mN0.001 N = 1 × 10⁻⁶ kN

How force conversion works

All conversions pass through Newtons (N), the SI base unit of force. Multiply the input by its Newton factor, then divide by the target unit's Newton factor.

Force is defined as mass × acceleration (F = ma). 1 Newton is the force needed to accelerate 1 kg at 1 m/s².

Newton's Second Law context

This converter handles unit translation only - it does not account for the physical relationship between force, mass, and acceleration. Newton's Second Law states F = ma: 1 Newton equals the force required to accelerate 1 kilogram at 1 m/s². When comparing forces in different unit systems, always confirm whether the source is measuring weight (gravitational force) or a true dynamic force.

Human force reference

SourceApproximate force
Human grip (average adult)~400 N (90 lbf)
Gravity on 70 kg person~686 N (154 lbf)
Car door closing~200–400 N
Car crash at 50 km/h~10,000–50,000 N
Bite force (human molar)~700 N
Space Shuttle Main Engine (each)~1.86 MN

kgf vs. kg disambiguation

1 kilogram-force (kgf) is the force exerted by gravity on a 1 kg mass at Earth's standard gravity: 1 kgf = 9.80665 N exactly. The kilogram-force is often informally and incorrectly called "kilograms" in everyday speech ("this weighs 5 kilograms of force"). In SI, the kilogram is a unit of mass, not force - use Newtons for force in physics and engineering.

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