How big is my tank?

[kruzz]

Is there a simple formula for estimating the size of my tank?

It is 40*18*19. How many gal. is this?

 

[smithrc]

have a look int the beginner section - at the top are loads of pinned topics - i believe one of them there tells you.

 

[smithrc]

I lied - its in the chit chat...
Here