About the Aquarium Glass Thickness Calculator
Glass thickness needed for a tank of a given height, with the safety factor.
Also known as: tank glass thickness, aquarium glass calculator, diy aquarium glass, glass thickness for fish tank.
How to use this calculator
- Enter water height, tank length, safety factor, glass type.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Thickness scales with the cube root of water height and the safety factor
Worked example
Using the values pre-filled in the calculator above:
- Water height = 50 cm
- Tank length = 120 cm
- Safety factor = 3.8
- Glass type: Float glass
the calculator returns:
- Recommended glass thickness: 19 mm
- Calculated minimum: 3,703.2 mm
- Safety factor used: 3.8
- Water pressure at the base: 4.9 kPa