About the Units
gigameter (Gm)
A length unit equal to 10^9 meters.
foot (U.S. survey) (ft (U.S. survey))
A slightly different foot unit used in land surveying.
Common Conversions
- 1 Gm = 3280833500.0 ft (U.S. survey)
- 3.048006e-10 Gm = 1 ft (U.S. survey)