The pound-force
The pound-force (lbf) equals exactly 4.4482216152605 newtons — the force exerted by standard gravity on a one-pound mass. It is the standard force unit in US engineering, aerospace thrust ratings, and mechanical specifications.
Pound-force to Newtons Converter
1 lbf = 4.44822 N (pound-force → newton)
1 lbf = 4.44822 N
1 pound-force equals 4.44822 newtons. To convert pound-force to newtons, multiply the pound-force value by 4.44822. For quick reference: 1 lbf = 4.44822 N, 5 lbf = 22.2411 N, 10 lbf = 44.4822 N, 100 lbf = 444.822 N.
Formula
Newtons = Pound-force × 4.44822Quick
How to convert pound-force to newtons
Take your value
Start with your value in pound-force.
Multiply by 4.44822
Multiply the pound-force value by 4.44822. This is the exact conversion factor from pound-force to newtons.
Read the result
The product is your value in newtons. For example, 5 lbf × 4.44822 = 22.2411 N.
Conversion formula
The exact factor from pound-force to newtons is 4.44822.
Newtons = Pound-force × 4.44822
Pound-force to Newtons conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pound-force (lbf) | Newtons (N) |
|---|---|
| 0.1 lbf | 0.44482 N |
| 0.25 lbf | 1.1121 N |
| 0.5 lbf | 2.2241 N |
| 1 lbf | 4.4482 N |
| 2 lbf | 8.8964 N |
| 3 lbf | 13.345 N |
| 4 lbf | 17.793 N |
| 5 lbf | 22.241 N |
| 6 lbf | 26.689 N |
| 7 lbf | 31.138 N |
| 8 lbf | 35.586 N |
| 9 lbf | 40.034 N |
| 10 lbf | 44.482 N |
| 11 lbf | 48.93 N |
| 12 lbf | 53.379 N |
| 13 lbf | 57.827 N |
| 14 lbf | 62.275 N |
| 15 lbf | 66.723 N |
| 16 lbf | 71.172 N |
| 18 lbf | 80.068 N |
| 20 lbf | 88.964 N |
| 22 lbf | 97.861 N |
| 24 lbf | 106.76 N |
| 25 lbf | 111.21 N |
| 28 lbf | 124.55 N |
| 30 lbf | 133.45 N |
| 32 lbf | 142.34 N |
| 36 lbf | 160.14 N |
| 40 lbf | 177.93 N |
| 45 lbf | 200.17 N |
| 48 lbf | 213.51 N |
| 50 lbf | 222.41 N |
| 60 lbf | 266.89 N |
| 70 lbf | 311.38 N |
| 75 lbf | 333.62 N |
| 80 lbf | 355.86 N |
| 90 lbf | 400.34 N |
| 100 lbf | 444.82 N |
| 125 lbf | 556.03 N |
| 150 lbf | 667.23 N |
| 200 lbf | 889.64 N |
| 250 lbf | 1112.1 N |
| 300 lbf | 1334.5 N |
| 400 lbf | 1779.3 N |
| 500 lbf | 2224.1 N |
| 600 lbf | 2668.9 N |
| 750 lbf | 3336.2 N |
| 800 lbf | 3558.6 N |
| 900 lbf | 4003.4 N |
| 1000 lbf | 4448.2 N |
Real-world reference
A commercial jet engine can produce over 70,000 lbf of thrust. A typical adult grip strength is around 90–110 lbf. In newtons, that gives you: 1 lbf = 4.44822 N, 10 lbf = 44.4822 N, 100 lbf = 444.822 N.
Frequently asked questions
- How many newtons are in 1 pound-force?
- 1 pound-force equals 4.44822 newtons.
- How do I convert pound-force to newtons?
- Multiply the pound-force value by 4.44822. So x lbf × 4.44822 = the equivalent in N.
- What is 5 pound-force in newtons?
- 5 pound-force equals 22.2411 newtons.
- What is 10 pound-force in newtons?
- 10 pound-force equals 44.4822 newtons.
- What is 100 pound-force in newtons?
- 100 pound-force equals 444.822 newtons.
- How do I convert back from newtons to pound-force?
- Multiply the newton value by 0.224809. For example, 1 N = 0.224809 lbf.
- Is the pound-force bigger than the newton?
- Yes. 1 pound-force is larger than 1 newton — specifically 4.44822 times larger.
- Are these conversion factors exact?
- The factor is derived directly from the SI definitions of pound-force and newton; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the pound-force and the newton
The newton
The newton (N) is the SI derived unit of force, defined as the force required to accelerate a one-kilogram mass at one meter per second squared. It is the standard unit throughout physics and engineering.