Free aquarium calculator

Corner Aquarium Calculator

Estimate quarter-circle corner fish tank volume in litres and gallons.

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Core formulaVolume = π × wall length² ÷ 4 × water height

A corner tank running 60 cm along each wall and filled to 50 cm holds about 141.4 litres.

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Calculated result141.4 L37.3 US gal · 31.1 UK gal

Quarter-cylinder model for curved-front corner tanks; flat-front designs hold less.

What it does

A clearer starting point for your setup.

Corner aquariums with a curved front form a quarter cylinder. Enter the length along each wall and the water height to estimate capacity.

The live tool updates immediately and shows the result in the units commonly used by aquarium keepers around the world.

Before relying on the result

Three quick checks

01

The model fits curved-front corner tanks best.

02

Flat-front corner designs hold somewhat less.

03

Use internal measurements for a closer estimate.

Frequently asked

Common questions

How is a corner tank's volume calculated?+

A quarter-cylinder corner tank's base area is π × radius² ÷ 4, where the radius is the length along each wall. Multiply by water height for volume—the calculator handles it from those two measurements.

My corner tank has a flat front—does the formula fit?+

The quarter-circle model fits curved-front corner tanks best. Flat-front (pentagon) corner designs hold somewhat less; treat the result as an upper estimate or use the manufacturer's figure.

Are corner aquariums harder to equip?+

Slightly—their depth from front glass to corner is large, so reaching the back needs longer tools, and standard rectangular hoods and lights do not fit. Equipment made for the specific model saves frustration.

Ready to calculate?

Use the live corner aquarium calculator.

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