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Free online force converter

Force is a push or pull that acts on an object. This converter handles 8 common force units used in engineering, physics, and everyday measurement.

About this calculator

How to use

  1. Enter the force value.
  2. Select the unit you are converting from.
  3. Select the unit you are converting to.
  4. The result and full conversion table appear instantly.
  5. Click “Share with my numbers” to copy a URL with your inputs.

Conversion factors (relative to Newton)

UnitNewton equivalent
Newton (N)1
Kilonewton (kN)1 000
Millinewton (mN)0.001
Pound-force (lbf)4.44822
Kilogram-force (kgf)9.80665
Ounce-force (ozf)0.278014
Dyne (dyn)0.00001
Kilopound-force (kip)4 448.22

Worked example

A typical car engine produces about 200 lbf of thrust at idle.

Converting to Newtons: 200 × 4.44822 = 889.6 N

Converting to kgf: 889.6 ÷ 9.80665 ≈ 90.7 kgf

Notes

  • Newton (N) is the SI unit of force: 1 N = 1 kg·m/s².
  • Kilogram-force (kgf) is sometimes called “kilopond” (kp) in older European texts.
  • Conversion factors follow NIST Guide to the SI (2008), Appendix B.

Frequently asked

How does the force converter work?
Every unit is first converted to the base unit (Newton) by multiplying by a fixed factor, then divided by the target unit's factor to get the result.
What is the difference between Newton and kilogram-force?
A Newton (N) is the SI unit of force. One kilogram-force (kgf) equals the force exerted by gravity on a 1 kg mass, which is 9.80665 N.
What is a pound-force?
A pound-force (lbf) is the force exerted by gravity on a 1 pound mass under standard gravity. One lbf equals approximately 4.44822 N.
What is a dyne?
A dyne is the CGS unit of force. One dyne equals 10⁻⁵ Newtons, or 0.00001 N.
What units are supported?
Newton (N), kilonewton (kN), millinewton (mN), pound-force (lbf), kilogram-force (kgf), ounce-force (ozf), dyne (dyn), and kilopound-force (kip).