Formula used
Vertical cylindrical volume = π × (inside diameter ÷ 2)² × liquid height
Worked tank volume example
Tank Volume Calculator example: π × (13.9 ft ÷ 2)² × 3.63 ft = 550.84 ft³. Multiplying by 7.48052 gives approximately 4,121 U.S. gallons.
Interpret gallons and flow
Use gallons as a planning capacity and rely on the manufacturer's strapping or calibration chart for inventory and custody measurements.
System effects the formula omits
Dished heads, cones, freeboard, internal equipment, horizontal orientation, wall thickness, and calibration tables make real tank capacity differ.
Questions specific to this calculation
When does a cylinder differ from actual tank capacity?
Enter inside diameter and liquid height for a vertical circular cylinder. Use actual liquid depth rather than shell height when the tank is not full.