Convert Kilograms-force to Grams-force

Formula

gf = kgf × 1000

Derivation from SI units:

• 1 kgf = 1 kg × 9.80665 m/s² = 9.80665 N (exact)
• 1 gf = 9.80665 × 10⁻³ N (exact)
• 1 kgf = 9.80665 N ÷ 0.00980665 N per gf = 1000 gf

Both units are defined exactly, so the factor is exact. Kilogram-force definition: kilogram-force; Gram-force definition: gram-force.

Worked examples

1. A reading of 5 kgf converts to 5000 gf.
   5 kgf × 1000 = 5000 gf
2. A value of 50 kgf is 50000 gf.
   50 kgf × 1000 = 50000 gf

Where it's used

Kilograms-force are used for older metric engineering data and gauges (kgf/cm²), while grams-force appear in keyboard switch actuation force (e.g. 45 gf). Both measure force, so the conversion is a fixed factor.

Kilogram-force to other force units

Frequently asked questions

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, "kilogram-force (kgf)".
• 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: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.