gallon measurement?

[anubix00]

what is the formula for finding out how many gallons my tank will hold? i have a tank, i just dont know exactly how big it is.

 

[patandlace]

what are the measurements? How long, deep and high.

 

[xdave]

LxWxH in inches divided by 231

 

[agent707]

Yea that works.
The value is 7.48051945 gallons per cubic foot.
So if you wanted to do it the long way; LxWxH (in inches) = TotalCubicInches div 1728 = Cubic Feet x the above number.
Comes out the same though...