Originally posted by Tagg
Say your tank was 48 long, 18 high, and 18 wide:
Take 48" X 18" X 18" = 15,552 cubic inches
divide by 1729 to get cubic feet
(12 X 12 X 12 = 1729 cubic inches in a cubic foot)
Convert to cubie feet = 9
7 . 480 gal per cubic foot
9 X 7.480 = 67.32 gal tank
Tagg
You know if the 67.32 is the gallons figured, the inside dimention may be slightly smaller. It may be an even 65 gallon tank. Lesley