Tropical Fish

Aquarium and Fish Tank Volume Calculator

Common Conversions
*Please note: The aquarium calculator and conversions on this page use javascript. It will only work if javascript is enabled in your internet browser.

Below you will find our aquarium calculator that you can use to convert back and forth between some of the most common conversions you'll encounter when running your fish tank.

Currently, we have Fahrenheit to Celsius, Gallons to Liters, Inches to Centimeters (useful for determining fish species sizes), UK Gallons to US Gallons, and also a calculator to determine the total volume of your aquarium. Please not that the total tank volume figure computed is a rough estimate and only takes into account your fish tank dimensions. It does not take into account ornaments, decorations, the substrate, live rock, etc. These items can have an effect on the total volume of water in your aquarium. This calculation is simply based on an empty tank with the given dimensions.

*Numbers round up to two decimals places upon conversion.

Convert Fahrenheit to Celsius
Enter °F: = °C

Convert Celsius to Fahrenheit
Enter °C: = °F

Convert Gallons to Liters
Enter Gallons: = Liters

Convert Liters to Gallons
Enter Liters: = Gallons

Convert Inches to Centimeters
Enter Inches: = Centimeters

Convert Centimeters to Inches
Enter Centimeters: = Inches


Convert UK Gallons to US Gallons
Enter UK Gallons: = US Gallons


Convert US Gallons to UK Gallons
Enter US Gallons: = UK Gallons


Convert Meters to Feet
Enter Meters: = Feet


Convert Feet to Meters
Enter Feet: = Meters


Calculate Fish Tank Volume in Gallons Based on Tank Size
Fish Tank Length in Inches:
Fish Tank Width in Inches:
Fish Tank Height in Inches:

Aquarium Size is US Gallons
Aquarium Size is UK Gallons

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