277.4 cubic inches per UK gallon.
Gallons is a liquid measurement and inches is a solid measurement so there is no such thing as inches in a gallon but there is square inches in a gallon which is completely diffrent. Cubic inches measure volume so a gallon would be measured in cubic inches rather than square inches. 231 cubic inches is equal to one gallon. Answer2 The first para in the above answer is confusing because it says "there is square inches in a gallon". Unfortunately, there are NOT square inches in a gallon - they are CUBIC inches (a measure of volume, not area)
There are 115.5 cubic inches in a half gallon.
1 dry gallon is 268.8 cubic inches.
One US gallon = 231 cubic inches.
231 cubic inches per US gallon.
One US gallon = 231 cubic inches.
One US gallon = 231 cubic inches.
1 gallon of space = 231 cubic inches regardless of what's in the gallon. Even if it's empty.
There are approximately 73,921 cubic inches in a 275 gallon cylinder.
One Imperial gallon = about 277.4 cubic inches.
1 US gallon is 231 cubic inches.
231 -- the same as the number of cubic inches in a gallon of any substance. This is a property of gallons, not of specific materials.