Tank Volume Calculator

Get tank capacity in gallons and cubic feet for vertical and horizontal cylinders and rectangular tanks. Enter the dimensions in inches and the calculator returns full capacity to the brim.

Tank

Shape

Diameter (in)

Height (in)

Liquid Level (in, optional)

Depth from bottom; blank = full

All dimensions in inches. Blank level → full (brim) capacity.

Capacity

Enter dimensions to calculate

Returns full (100%) geometric capacity. For working volume, derate for freeboard, inlet/outlet positions, and the usable draw between high and low levels.

Run your whole job on the same numbers

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