Aquarium Cost Calculator
Estimate the total cost of setting up and maintaining an aquarium. Includes equipment, livestock, electricity, food, and supplies.
Free Aquarium Calculators
8 toolsFish tank, filter, heater, and aquarium cost calculators. Browse our free aquarium tools below — no sign-up required.
Aquarium Filter GPH Calculator
Calculate the minimum filter flow rate (GPH) for your aquarium. Freshwater needs 4× turnover, saltwater 6-10× per hour.
Aquarium Heater Size Calculator
Calculate the right wattage aquarium heater for your tank. Uses tank gallons and temperature differential to recommend heater wattage.
Aquarium Lighting Calculator
Calculate the right aquarium light wattage by tank type. Fish-only: 1-2 W/gal, planted: 2-5 W/gal, reef: PAR-based lighting.
Aquarium Water Change Calculator
Calculate how much water to remove and replace during aquarium water changes. Use 10-25% weekly changes to maintain water quality.
Fish Food Amount Calculator
Calculate how much to feed your fish daily. Feed what fish consume in 2-3 minutes, 1-2 times per day, based on fish count and size.
Fish Tank Size Calculator
Calculate the ideal aquarium size for your fish based on species, adult length, and bioload. Use the 1 gallon per inch rule with adjustments.
Saltwater Mix Calculator
Calculate the amount of salt mix needed for your saltwater aquarium. Target specific gravity 1.023-1.025 for marine fish and corals.