Pounds-force to Newtons Converter
Convert pounds-force to newtons instantly. Type a value, change either unit, or press swap to go the other way. 1 pound-force = 4.4482216 newtons.
1 pound-force = 4.4482216 newtons
How to convert pounds-force to newtons
newtons = pounds-force × 4.448221615
To convert pounds-force to newtons, multiply the value by 4.448221615. To go back from newtons to pounds-force, divide by the same number (or multiply by 0.2248089431).
Worked examples
- 10 lbf: 10 × 4.448221615 = 44.482216 N
- 25 lbf: 25 × 4.448221615 = 111.20554 N
- 50 lbf: 50 × 4.448221615 = 222.41108 N
Multiply by 4.45. A 100 lbf load is 445 N.
Pounds-force to Newtons conversion table
Pounds-force to Newtons
| lbf | N |
|---|---|
| 1 | 4.4482216 |
| 5 | 22.241108 |
| 10 | 44.482216 |
| 25 | 111.20554 |
| 50 | 222.41108 |
| 100 | 444.82216 |
| 150 | 667.23324 |
| 200 | 889.64432 |
| 500 | 2,224.1108 |
| 1,000 | 4,448.2216 |
Newtons to Pounds-force
| N | lbf |
|---|---|
| 1 | 0.22480894 |
| 5 | 1.1240447 |
| 10 | 2.2480894 |
| 25 | 5.6202236 |
| 50 | 11.240447 |
| 100 | 22.480894 |
| 150 | 33.721341 |
| 200 | 44.961789 |
| 500 | 112.40447 |
| 1,000 | 224.80894 |
Force equivalents
See how one pound-force and one newton compare with every other force unit on the site.
1 pound-force equals
| Unit | Value |
|---|---|
| newtons (N) | 4.448222 |
| kilonewtons (kN) | 0.004448222 |
| kiloponds (kilogram-force) (kp) | 0.4535924 |
| dynes (dyn) | 444,822.2 |
1 newton equals
| Unit | Value |
|---|---|
| kilonewtons (kN) | 0.001 |
| pounds-force (lbf) | 0.2248089 |
| kiloponds (kilogram-force) (kp) | 0.1019716 |
| dynes (dyn) | 100,000 |
When you need to convert pounds-force to newtons
Tow ratings, spring forces, bolt tensions and tool specifications in the US are given in pounds-force. Engineering calculations and international standards use newtons. Converting accurately matters for safety-critical loads.
About the units
Pound-force (lbf)
A pound-force is the force exerted by gravity on a one-pound mass: about 4.448 newtons.
Newton (N)
The newton is the force that gives a one-kilogram mass an acceleration of one meter per second squared. A small apple weighs about one newton.
Frequently asked questions
How do I convert pounds-force to newtons?
Multiply the number of pounds-force by 4.448221615. For example, 10 pounds-force × 4.448221615 = 44.48221615 newtons.
How many newtons are in one pound-force?
There are 4.448221615 newtons in one pound-force.
How many pounds-force are in one newton?
There are 0.2248089431 pounds-force in one newton.
What is the weight of a 150 lb person in newtons?
A 150 lb person weighs 150 lbf, which is 667.2 N. Their mass is 68 kg, and weight in newtons is mass × 9.81.
Can I convert other force units with this tool?
Yes. Use the From and To drop-downs in the converter to choose any force unit, or press the swap button to reverse the conversion. All calculations use internationally defined conversion factors.