Convert Pounds-force to Grams-force
1 pound-force (lbf) equals 453.59237 grams-force (gf).
1 lbf = 453.59237 gf
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pound-force to gram-force converter to paste a column from Excel.
How to Convert Pound-force to Gram-force
- 1 lbf = 453.59237 gf
- 1 gf = 0.002204622622 lbf
- Example: convert 15 lbf to gf: 15 lbf = 15 × 453.59237 gf = 6803.88555 gf
Formula
gf = lbf × 453.59237
Derivation from SI units:
- 1 lbf = 0.45359237 kg × 9.80665 m/s² = 4.4482216152605 N
- 1 gf = 9.80665 × 10⁻³ N (exact)
- 1 lbf = 4.448221615261 N ÷ 0.00980665 N per gf = 453.59237 gf
Both units are defined exactly, so the factor is exact. Pound-force definition: pound-force; Gram-force definition: gram-force.
Worked examples
- A reading of 25 lbf converts to 11339.80925 gf.
25 lbf × 453.59237 = 11339.80925 gf - A value of 500 lbf is 226796.185 gf.
500 lbf × 453.59237 = 226796.185 gf
Pound-force to Gram-force conversion table
| Pounds-force (lbf) | Grams-force (gf) |
|---|---|
| 1 lbf | 453.59237 gf |
| 5 lbf | 2267.96185 gf |
| 10 lbf | 4535.9237 gf |
| 25 lbf | 11339.80925 gf |
| 50 lbf | 22679.6185 gf |
| 100 lbf | 45359.237 gf |
| 200 lbf | 90718.474 gf |
| 500 lbf | 226796.185 gf |
| 1000 lbf | 453592.37 gf |
| 5000 lbf | 2267961.85 gf |
| 10000 lbf | 4535923.7 gf |
Where it's used
Pounds-force are used for thrust, tension and load ratings in US units, while grams-force appear in keyboard switch actuation force (e.g. 45 gf). Both measure force, so the conversion is a fixed factor.
Pound-force to other force units
| Conversion | 1 lbf equals |
|---|---|
| pound-force to newton | 4.448221615 N |
| pound-force to kilonewton | 0.004448221615 kN |
| pound-force to kilogram-force | 0.45359237 kgf |
| pound-force to kip | 0.001 kip |
| pound-force to dyne | 444822.1615 dyn |
| pound-force to ounce-force | 16 ozf |
| pound-force to gram-force | 453.59237 gf |
Frequently asked questions
How many grams-force are in 1 pound-force?
1 lbf = 453.59237 gf.
How do I convert pounds-force to grams-force?
Multiply the value in lbf by 453.59237. For example, 15 lbf × 453.59237 = 6803.88555 gf.
Is the lbf to gf conversion exact?
Yes. Both units are defined exactly, and 1 lbf is exactly 453.59237 gf.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force (lbf)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gram-force".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Pounds-force to Grams-force. Retrieved October 17, 2026, from https://scientificconverters.com/force/pound-force-to-gram-force/
IEEE
Scientific Converters, "Convert Pounds-force to Grams-force," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/force/pound-force-to-gram-force/