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Pounds-force to Newtons

1 pound-force = 4.4482 newtons · 1 N = 0.22481 lbf

1 pound-force = 4.4482 newtons

How it’s calculated

N = lbf × 4.448221615

  • Multiply the value in pounds-force by 4.448221615.
  • To go back, divide by 4.448221615 (or multiply by 0.2248089431).
  • 1 lbf = 4.448221615 N · 1 N = 0.2248089431 lbf
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 lbf = 4.4482216152605 N. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.).

  2. Multiply by the factor written as a fraction

    Put lbf in the denominator so it cancels, leaving N.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 4.4482 N

1 lbf in other units

Batch convert lbf → N
Results
  1. 1 lbf = 4.4482 N
  2. 5 lbf = 22.241 N
  3. 10 lbf = 44.482 N
  4. 25 lbf = 111.21 N

Permanent link to this conversion

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Quick examples

  • 1 pound-force = 4.4482 newtons
  • 5 pounds-force = 22.241 newtons
  • 10 pounds-force = 44.482 newtons
  • 25 pounds-force = 111.21 newtons
  • 100 pounds-force = 444.82 newtons

About these units

Pound-force (lbf)

US & imperial (identical)

Exactly 4.448 221 615 260 5 N.

1 lbf = 4.448221615 N

Source: NIST SP 811 / Handbook 44

Newton (N)

SI (metric)

1 kg·m/s².

Base unit

Source: BIPM SI Brochure (9th ed.)

Pounds-force to newtons conversion table

pound-force (lbf) to newton (N)
Pounds-force (lbf)Newtons (N)
0.1 lbf0.44482 N
0.5 lbf2.2241 N
1 lbf4.4482 N
2 lbf8.8964 N
3 lbf13.345 N
4 lbf17.793 N
5 lbf22.241 N
6 lbf26.689 N
7 lbf31.138 N
8 lbf35.586 N
9 lbf40.034 N
10 lbf44.482 N
15 lbf66.723 N
20 lbf88.964 N
25 lbf111.21 N
30 lbf133.45 N
40 lbf177.93 N
50 lbf222.41 N
75 lbf333.62 N
100 lbf444.82 N
250 lbf1,112.1 N
500 lbf2,224.1 N
1,000 lbf4,448.2 N

Related conversions

Frequently asked questions

How do I convert pounds-force to newtons?

Use N = lbf × 4.448221615. Multiply the value in pounds-force by 4.448221615.

How many newtons are in 1 pound-force?

1 pound-force (lbf) equals 4.4482 newtons (N); more precisely 4.448221615.

How many pounds-force are in 1 newton?

1 newton (N) equals 0.22481 pounds-force (lbf); more precisely 0.2248089431.

What is 10 lbf in N?

10 pounds-force = 44.482 newtons.

What is a pound-force?

Exactly 4.448 221 615 260 5 N.

What is a newton?

1 kg·m/s².

Formula: N = lbf × 4.448221615. Factors last reviewed 2026-10-27.