Aquarium Calculators
Free tools to help you plan and maintain your aquarium. From stocking levels to fertilizer dosing, we've got you covered.
Stocking Guide
How many fish can your tank hold? Learn proper bioload management and get sample stocking plans.
Tank Volume
Calculate gallons or liters for rectangular, bowfront, cylinder, and hexagonal tanks.
CO2 Calculator
Determine CO2 levels from pH and KH. Essential for planted tank success.
Heater Sizing
Find the right wattage heater for your tank size and room temperature.
Lighting Calculator
Calculate PAR, lumens, and watts per gallon for your planted aquarium.
Salt Mix
How much salt to mix for your saltwater or brackish tank. Target salinity calculator.
EI Dosing
Estimative Index fertilizer dosing for planted tanks. Calculate macro and micro nutrients.
Water Change
Calculate how water changes affect nitrate levels. Plan your maintenance schedule.
Track Your Results
MyAquaLog goes beyond calculators. Track water parameters over time, get maintenance reminders, and see trends in your tank's health.
Start Tracking Free