Gram-force (gf)
The gram-force (gf) is the weight of one gram under standard gravity, 9.80665 mN.
Symbol: gf
Quantity: force
SI relation: 1 gf = 0.00980665 N (exact)
Derivation: 1 gf = 9.80665 × 10⁻³ N (exact)
Exact: yes, by definition
Typical uses
- Keyboard switch actuation force (e.g. 45 gf)
- Peel and adhesion tests
- Small spring forces
Convert grams-force to other units
| Conversion | 1 gf equals | Reverse |
|---|---|---|
| gram-force to newton | 0.00980665 N | newton to gram-force |
| gram-force to kilonewton | 0.00000980665 kN | kilonewton to gram-force |
| gram-force to pound-force | 0.002204622622 lbf | pound-force to gram-force |
| gram-force to kilogram-force | 0.001 kgf | kilogram-force to gram-force |
| gram-force to kip | 0.000002204622622 kip | kip to gram-force |
| gram-force to dyne | 980.665 dyn | dyne to gram-force |
| gram-force to ounce-force | 0.03527396195 ozf | ounce-force to gram-force |
Open the Force Converter to convert any value between all units.
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, "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). Gram-force (gf). Retrieved October 17, 2026, from https://scientificconverters.com/units/gram-force/
IEEE
Scientific Converters, "Gram-force (gf)," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/gram-force/