Fish Calculators

Plan your aquarium with tank volume, stocking, water change, heater, and filter calculations.

Tank Volume Calculator

Convert tank dimensions to gallons and liters.

Estimate how many fish your tank can support.

Plan weekly water changes.

Estimate heater wattage.

Estimate recommended filter flow.

Estimate substrate weight.

Calculate dechlorinator dose per water change.

Estimate air pump flow range.

These calculators provide estimates and general guidance. Verify stocking and equipment needs for your species.