About the Units
Imperial gallon (gal (UK))
The British imperial gallon, larger than the US gallon.
Learn more about Imperial gallons
cubic megameter (Mm³)
A volume unit equal to 10^18 cubic meters.
Common Conversions
- 1 gal (UK) = 4.54609e-21 Mm³
- 219969250000000000000.0 gal (UK) = 1 Mm³