Force Converter
Convert between any two newton units in your browser — instant, accurate, and private.
Example
1 N = 0.001 kN. Switch the unit menus to convert between any pair.
How it works
Every value is converted through a single newton base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Force conversion shows up wherever a load, push, or pull has to be quoted in someone else's units. An engineer sizing a bolt might read a datasheet in kilonewtons (kN), while the bench test that fed it reports pound-force (lbf), and a physics problem set may still be written in dyne. The newton (N) is the SI anchor — the force that accelerates one kilogram at one metre per second squared — and every other unit on this page is just a scaled version of it, so getting between them is pure multiplication, not guesswork.
The five units split cleanly by origin. Newton and kilonewton are metric/SI (1 kN = 1,000 N). Dyne is the old centimetre-gram-second (CGS) metric unit, tiny by comparison at 1 N = 100,000 dyne. Pound-force is imperial: the weight of one pound mass under standard gravity. Kilogram-force (kgf, also called the kilopond) is a "gravitational metric" unit — the weight of one kilogram under standard gravity — which is why it feels intuitive but isn't strictly SI.
For quick mental math: 1 kgf is almost exactly 9.81 N (round to 10 N if you only need a ballpark), and 1 lbf is about 4.45 N. A handy shortcut is that 1 kgf ≈ 2.205 lbf, the same factor that links kilograms and pounds — because both are weights of the same masses under the same gravity. Need newtons from a weight in kg? Multiply by 10 for a fast estimate, then trim about 2% if you want it tight.
- 1 N = 0.001 kN = 100,000 dyne ≈ 0.2248 lbf ≈ 0.10197 kgf
The classic mistake is treating kgf and lbf as masses rather than forces — they only equal a kilogram's or pound's weight at standard gravity (9.80665 m/s²), so a scale reading in kgf is technically force, not mass, even though the numbers match on Earth. The other trap is precision: standard gravity is a defined constant, so kgf-to-newton is exact, but many tables round it to 9.81, introducing a small error that compounds when you chain conversions. Convert through newtons once rather than hopping unit to unit.
Frequently asked questions
What does the force converter do?
It converts between common newton units instantly. Pick a unit to convert from and a unit to convert to, type a value, and the result updates live.
Which units does this converter support?
It includes 5 units: Newton, Kilonewton, Pound-force, Kilogram-force, Dyne.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many newtons are in 1 pound-force?
1 pound-force equals about 4.4482 newtons. So a 10 lbf load is roughly 44.5 N.
What is 1 kgf in newtons?
1 kilogram-force equals exactly 9.80665 newtons, usually rounded to 9.81 N. This is the weight of a 1 kg mass under standard gravity.
How do I convert kN to pounds-force?
Multiply kilonewtons by about 224.81 to get pound-force. For example, 5 kN is roughly 1,124 lbf.
Is kgf the same as a kilogram?
No. A kilogram is a unit of mass, while kilogram-force is a unit of force equal to that mass's weight under standard gravity (9.80665 N). The numbers coincide on Earth, but they measure different things.
How many dynes are in a newton?
1 newton equals exactly 100,000 dynes (10^5). The dyne is a CGS unit, so it is very small — handy for tiny forces in physics.
What is the difference between pound-force and pound-mass?
Pound-mass (lb) measures mass, while pound-force (lbf) measures the weight of one pound-mass under standard gravity, about 4.448 N. They share a name but answer different questions.
How do I convert pound-force to kilogram-force?
Divide pound-force by about 2.2046 to get kilogram-force, since 1 kgf is roughly 2.2046 lbf. For example, 50 lbf is about 22.68 kgf.
Why is the newton the base unit for force?
The newton is the SI derived unit of force, defined as the force that gives a 1 kg mass an acceleration of 1 m/s². Every other force unit, like kN, lbf, kgf, and dyne, is defined as a multiple of it.