Aquarium Water Volume Calculator

Calculate your aquarium's true water volume in gallons and liters from tank dimensions, then get fish stocking density guidance for a healthy aquatic environment.

Tank Shape Dimensions

Length (in)

Width (in)

Height (in)

Substrate + Decor Fill (typical 10-15%) Tank Type

US Gallons

Liters

Stocking Density Guide

Guideline (1 inch/gallon)-

Small fish (<2")-

Medium fish (2-4")-

Large fish (4-8")-

Filter turnover needed-