About Tank Volume Calculator
The Tank Volume Calculator is useful for plumbers, farmers, and homeowners dealing with cisterns, septic tanks, or rain barrels.
Shape Support
- Cylinder (Vertical): Standard water heaters, wells. Formula: πr²h.
- Rectangle: Box cisterns. Formula: L × W × H.
- Rectangle (Oval): Common for fuel oil tanks.
How to Use
Select the shape, enter internal dimensions. The tool outputs Volume in Cubic Feet, US Gallons, and Liters.