Equipment Review and Discussion :: How many gallons is my aquarium?

[Ncf2222]

I'm trying to figure out how many gallons my aquarium is, here is the dimensions

3 feet long
a foot and a half wide or 1 and 1/2
16 and a half inches going up and down

3ft"
1ft 1/2inches"
16.5inches "

[rsour24]

http://www.redearslider.com/calculator.html

30 gallons