Aquarium Glass Thickness Calculator

How Aquarium Glass Thickness Is Calculated

This calculator uses the Aquarium World plate-bending method to estimate minimum safe glass thickness for DIY aquarium builds. Side and bottom panels use separate formulas because the bottom must support the full water load.

Thickness Formula

$$t = \sqrt{\frac{\beta \cdot H^3 \times 10^{-5}}{B}}$$

Where $H$ is water height in mm, $\beta$ is a panel coefficient based on aspect ratio, and $B$ is allowable bending stress (glass tensile strength divided by safety factor).

Additional Calculations

Volume: $V = l \times w \times h$
Surface area: $SA = 2(l + w)h + lw$
Water weight: mass from water density (998 kg/m³)
Glass weight: volume of all panels times glass density (2500 kg/m³)

Frequently Asked Questions

What safety factor should I use?

A safety factor of 3.8 is the hobby standard for annealed float glass. Higher values add more margin but increase glass weight and cost.

Why is bottom glass thicker than side glass?

The bottom panel bears the full weight of the water column and uses different aspect ratio coefficients. It typically needs more thickness than side panels.

How thick is a 10 gallon aquarium?

For a typical 20 × 10 inch base with 12 inch height, side glass needs about 0.15 inches and bottom glass about 0.21 inches at a 3.8 safety factor.

Is this a structural engineering certification?

No. This is a hobbyist planning tool. For large custom tanks or unusual designs, consult a qualified glass fabricator or structural engineer.

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Aquarium Glass Thickness Calculator

How Aquarium Glass Thickness Is Calculated

Thickness Formula

Additional Calculations

Frequently Asked Questions

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