Keeping an aquarium is a rewarding hobby, but it involves a surprising amount of math. Whether you're setting up a brand new aquascape or doing your weekly maintenance, knowing the exact volume and parameters of your tank is crucial for the health of your fish and plants.
We created these tools to take the guesswork out of fishkeeping. Use our calculators to find your true water volume (accounting for substrate), determine exactly how much water to drain during a water change, pick the right sized heater, and ensure your filter is providing enough flow for your bioload.
Available Tools
Recommended Aquarium Gear
FAQ
Do these calculators work for both freshwater and saltwater aquariums?
Yes, the basic math for volume, heater wattage, and turnover rates applies to both freshwater and saltwater tanks. However, specific livestock may have unique requirements.
Can I use inches and gallons instead of centimeters and liters?
Yes, most of our aquarium calculators allow you to easily toggle between metric (cm/liters) and imperial (inches/gallons) units.