About the Units
cubic gigameter (Gm³)
A volume unit equal to 10^27 cubic meters.
acre-foot (ac · ft)
A volume unit used in water resource management, equal to the volume of one acre covered to a depth of one foot.
Common Conversions
- 1 Gm³ = 8.1070846e23 ac · ft
- 1.233489e-24 Gm³ = 1 ac · ft