Estimating how much gallons are in a tank

  • We are currently upgrading MFK. thanks! -neo

greenlangtern

Candiru
MFK Member
Jul 1, 2008
100
1
48
Sacramento, CA
Just wondering how much a gallon is in inches cubed. I got a tank from a friend that is 24 in. x 12 in. x 17 in. and the glass is about a centimeter thick. I thought it was 30 gallons at first but now I'm beginning to think it is a 20 gallon. I'm getting a new filter for it so that's why I want to know. I'll most likely get a 30 gallon filter to clean better anyway.
 
its a 20 gallon, those are the same dimensions as my 20 gallon.

here's a site for future reference. it will allow you to do english or metric:

http://www.monsterfishkeepers.com/forums/calc.php

but definately get the bigger filter. hell, get one designed for a 40 gallon tank.
 
12 Volt Man;1943323; said:
there are 231 cubic inches in a US gallon.

so, LxWxH divided by 231 gives your tank volume in US gallons.

That's correct.
 
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