Interactive storage tool
Aquarium Weight Calculator
Estimate the complete filled system, including water, tank, stand, substrate, rock, and equipment.
Plan the support
Fresh water weighs about 8.34 pounds per U.S. gallon before adding the tank and other components. Large systems create concentrated long-term loads.
Common questions
Frequently asked questions
Does the calculator replace structural advice?
No. Consult an appropriate professional when floor capacity is uncertain.