assuming American gallons and not british gallons
1 m3 = 1000 liters
1 liter = 0.26417 gallons
thus 1 m3 = 1000*0.26417 = 264.17 gallons
There are 264.2 US gallons in one cubic meter.
One cubic meter is equal to 264.17205 US gallons.
One cubic meter is 264.172 US gallons.
One cubic meter = about 220 Imperial gallons.
One cubic meter is 219.969 Imperial (Canadian) gallons.
There are 220 Imperial gallons to one cubic meter.
There are 264.2 US gallons in one cubic meter of water.
There are 264.2 US gallons in one cubic meter of water.
One Imperial gallon = about 0.004546 cubic meters.
One cubic meter = 220 Imperial or 264.2 US gallons.
There area 264.2 (US) gallons of water in one cubic meter of volume.
1 gallon = 0.004 cubic meters.