Glass Tank Dimensions Tank Volume..........Dimensions 2 1/2 gallon............12" x 6" x 8" 5 gallon..................16" x 8" x 10" 10 gallon Leader....20" x 10" x 12" 15 gallon................24" x 12" x 12" 15 gallon High........20" x 10" x 18" 20 gallon High........24" x 12" x 16" 20 gallon Long.......30" x 12" x 12" 25 gallon.................24" x 12" x 20" 29 gallon.................30" x 12" x 18" 30 gallon Breeder...36" x 18" x 12" 40 gallon Breeder...36" x 18" x 16" 40 gallon Long........48" x 12" x 16" 50 gallon.................36" x 18" x 19" 55 gallon.................48" x 13" x 21" 65 gallon.................36" x 18" x 24" 75 gallon.................48" x 18" x 21" 90 gallon.................48" x 18" x 24" 125 gallon...............72" x 18" x 21" 150 gallon...............72" x 18" x 28" 180 Gallon...............72" x 24" x 25" DaCubs adds: In case anyone is curious, the formula for calculating the volume of a tank based on the dimensions is: [length * width * height] / 231 (all measurements in inches) Keep in mind that you need to use the inside dimensions to be 100% accurate, not the outside. The thickness of the glass will give you a volume larger than actual if you use the outside measurements.

Hello, Awesome post! Just 1 question, if a 48'' x 18'' x 24'' is a 90 gallon, then what is a 48'' x 24'' x 24''? Thanks! Corey

RE: Re: RE: Glass Tank Dimensions bump for sticky. Quick reference for people instead of having new forums pop up with people asking

RE: Re: RE: Glass Tank Dimensions Great post - ppl are always asking this Q. I am bookmarking it for sure and I second the sticky advice

RE: Re: RE: Glass Tank Dimensions Nice post Badger. If it is possible to edit, I'd suggest adding the formula for calculating the gallons as well. (L*W*H) / 230 I think?

RE: Re: RE: Glass Tank Dimensions Re-read the very first post in the thread. It includes the formula to calculate the volume of any rectangular tank. I'll quote it here for you, but you'll have to do the math. I mean, if we did all the work for you, how would you learn?!

Hey the Dimensions 48" x 13" x 21" is said to be a 55 gallon......is that a tall or long one.....or in other words is it really tall, or is it really wide or tall. This would really help if someone responded. Thanks

That would be a "Long" tank....The first number is always the "Length"..middle number is "width"(how far it goes back)...and last number is always the "Height"........(It is written that way so you can use the formula for volume....LxWxH is always equal to the volume)