Use this formula: cubic inches x 0.004329 = gallons
To convert cubic inches to gallons, divide cubic inches by 231:Cubic inches / 231 = US gallons
To convert cubic inches to gallons, divide the number of cubic inches by 231. This will give you the equivalent amount in gallons.
Conversion: cubic inches x 0.003605 = Imperial gallons
One cubic inch is equal to 0.004329004 gallons. (cubic inches) * 0.004329004 = gallons
If you remember the following facts, you'll never go wrong: ==> 1 cubic foot = 1,728 cubic inches ==> 231 cubic inches = 1 gallon
For me I would convert to cubic feet and then to gallons. 30" : 2.5 ft 18" : 1.5 ft 6". : 0.5 ft Multiply all to get 1.875 cubic feet volume water is 7.48 gallons per cubic foot volume so 7.48 x 1.875 is 14.025 gallons
To convert gallons to cubic inches, you would multiply by 231 (since there are 231 cubic inches in a gallon). So, 13.6 gallons would be 13.6 x 231 = 3141.6 cubic inches.
0.004329
To convert inches to gallons in a 55-gallon drum, you need to know the dimensions of the drum's interior and the specific height measurement in inches that you're converting. First, calculate the volume of the water in cubic inches by multiplying the drum's diameter and height. Then, convert cubic inches to gallons using the conversion factor (1 gallon = 231 cubic inches). Finally, divide the total cubic inches by 231 to get the equivalent volume in gallons.
To convert cubic inches to gallons, divide the volume in cubic inches by 231. This gives you the equivalent volume in gallons. In this case, a glass aquarium with a volume of 2315.52 cubic inches will hold approximately 10 gallons of water.
=There are 1,605.12 gallons in 481,536 cubic inches.==There are 1,605.12 gallons in 481,536 cubic inches.=
231 cubic inches == (presumed that you meant cubic inches, which like gallons is a measure of volume, rather than square inches, which is a measure of area) 1 US gallon = 231 Cubic inches (presuming you meant cubic inches, which like gallons is a measure of volume, rather than square inches, which is a measure of area)