Tankwise

Tools

Tools & calculators

Simple, no-signup tools that answer one question. More are added with each new guide.

Aquarium volume calculatorLitres and gallons from your tank dimensions.Open tool →Stocking level calculatorA rough check on how many fish a tank can carry.Open tool →Heater wattage calculatorWhat size heater your tank needs.Open tool →CO₂ calculatorEstimate dissolved CO₂ from pH and KH.Open tool →Water change calculatorLitres to replace for a given percentage.Open tool →Tank weight calculatorFilled weight, for floor loading.Open tool →Dosing calculatorMedicine or fertiliser dose by tank volume.Open tool →Aquarium unit converterLitres, gallons, °C, °F, cm, inches, ppm.Open tool →