Heaters

📏 How to Measure & Choose the Right Heater

• Choose your unit: centimeters (cm) or feet/inches (ft/in).
• Measure your tank’s inside length × width × height.
• Select the fish species you have from the list below.
• This calculator estimates tank volume (liters) and heater wattage accordingly.

🧠 A properly sized heater keeps your tank stable and your fish healthy and happy.

🐠 Tank Volume & Heater Calculator

Measurement Units:
Centimeters (cm) Feet/Inches Fish Species:
African Cichlids Angel Fish Apistogramma and Dwarf Cichlids Australian Natives Axolotles Barbs Betta Birchir Brackish Water Fish Central and South Americans Corydorus Danios and Rasbora Discus Eels and Loaches Exotics Feeders Fish Flowerhorns Goldfish Gouarmis & Paradise Fish Koi Livebearers Medaka Rice Fish Peacock Bass Plecos and Catfish Rainbow Fish Sharks Shrimp and Snails Stingrays Tetra and Pencil Fish Turtles Target Temp (°C):
Calculate