About the Units
cubic gigameter (Gm³)
A volume unit equal to 10^27 cubic meters.
cubic kilometer (km³)
A large volume unit equal to 10^9 cubic meters, used in geological and geographical measurements.
Common Conversions
- 1 Gm³ = 1000000000000000000.0 km³
- 1e-18 Gm³ = 1 km³