Tank Volume Calculator
Wet Pets Tank Volume Calculator
Estimate aquarium water volume using outside dimensions, glass thickness, water height, and displacement.
Measure outside glass to outside glass.
Measure outside glass to outside glass.
Overall tank height, not including stand or canopy.
Measure from inside bottom glass to normal water line.
Example: 3/8 inch = 0.375, 1/2 inch = 0.500.
Estimated % reduced by rock, sand, equipment, decor, and livestock.
Choose the unit used for all dimension inputs.
Estimated Water Volume
0.0 gallons
Before Displacement
0.0 gallons
Calculated Inside Length
0.00 in
Calculated Inside Width
0.00 in
Calculated Usable Water Height
0.00 in
Displacement Removed
0.0 gallons
This calculator uses outside tank dimensions and subtracts glass thickness from both sides of the length and width. Water height is treated as the actual filled water depth, then displacement is applied to estimate real system water volume.
Need help sizing salt mix, medication, or equipment? Bring your tank dimensions to Wet Pets Aquatics and we can help double-check your volume.