Aquarium Stocking Calculator
Calculate aquarium volume and maximum fish stocking capacity based on tank dimensions and filter type.
How to Use the Aquarium Stocking Calculator
- Enter the tank length, width, and height in centimetres.
- Select the type of filter you are using.
- Click Calculate to see volume and maximum stocking capacity.
- Compare the stocking level to your planned fish list.
Casi d'Uso
- •Planning a new aquarium fish community.
- •Checking if an existing tank is overstocked.
- •Comparing stocking capacity between different tank sizes.
- •Upgrading filtration to support more fish.
Formula
Volume (L) = L × W × H (cm) / 1000. Max fish inches = Volume (gallons) × filter multiplier (internal ×1.0, external ×1.25, canister ×1.5).
Domande Frequenti
What is the 1 inch per gallon rule?
It is a rough guideline: 1 inch of adult fish body length per gallon of water. A canister filter allows more stocking.
Does filter type really matter?
Yes. Better filtration supports higher bio-load, allowing more fish. Canister filters are the most efficient.
Is it free?
Yes, all calculators on OhMyCalc are completely free.