Force Converter
Convert between newtons, pound-force, kilogram-force, and more
Conversion Formula:
Multiply by 0.224809
Common Conversions
Understanding Force Units
Force is a physical quantity that can produce a change in the motion of an object. It is measured in various units depending on the system of measurement.
Key Force Units:
- * Newton (N): The SI unit of force. One newton is the force needed to accelerate one kilogram of mass at the rate of one meter per second squared.
- * Pound-force (lbf): A unit of force used in the imperial system. One pound-force is the force that would accelerate a mass of one pound at 32.174 feet per second squared (Earth's gravity).
- * Kilogram-force (kgf): A unit of force equal to the magnitude of the force exerted on one kilogram of mass in a 9.80665 m/s² gravitational field. Sometimes called kilopond.
- * Dyne: A unit of force in the CGS system. One dyne is the force required to accelerate a mass of one gram at a rate of one centimeter per second squared.
The scientific definition of force is based on Newton's Second Law: F = ma, where force equals the product of mass and acceleration.
Common Force Measurements
- Finger press on a button: ~1-2 newtons
- Weight of an apple: ~1 newton
- Weight of a human (~70 kg): ~686 newtons
- Maximum human bite force: ~700 newtons
- Car engine at full throttle: ~500 kilonewtons
- Space shuttle main engine thrust: ~1.8 meganewtons
- Saturn V rocket thrust: ~34 meganewtons
Force Concepts
Force can manifest in many forms:
- Gravitational: Attraction between masses
- Electromagnetic: Interaction between charged particles
- Strong nuclear: Binds protons and neutrons
- Weak nuclear: Responsible for radioactive decay
- Applied: Direct mechanical forces (push, pull, etc.)
- Friction: Resistance between surfaces
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Visual Comparison
Force Comparison
10.0 n
10.00 N equivalent
Similar to: Firm handshake
Strong social greeting pressure
2.25 lbf
10.00 N equivalent
Similar to: Firm handshake
Strong social greeting pressure
Force Scale
This logarithmic scale shows where these force values fall in the universal force spectrum
Marker A: 10.0 n
10.00 N
Marker B: 2.25 lbf
10.00 N
Common Force Equivalents
Mobile tip: Swipe left or right on the unit dropdown to quickly change units, or use the arrow buttons
About the Force Converter
Convert between newtons, pound-force, kilogram-force, and more All conversions run instantly in your browser and nothing you enter is sent to a server.
Common Conversion Formulas
| From | To | Formula |
|---|---|---|
| Newtons (N) | Pound-force (lbf) | lbf = N × 0.224809 |
| Newtons (N) | Kilogram-force (kgf) | kgf = N × 0.101972 |
| Newtons (N) | Dynes (dyn) | dyn = N × 100,000 |