Cylindrical · Spherical · Rectangular · Partial Fill
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Storage Tank Volume Calculator
Calculates volumes for vertical and horizontal cylindrical tanks at various liquid levels. Determines total capacity, working volume, and partial fill volumes for inventory management and tank gauging.
Calculation Mode:
Tank Shape
ft
(0 for full tank)
Tank Volume Results
Volume (Gallons)
-
gal
Volume (Barrels)-
Volume (Cubic Feet)-
Percent Full- %
Surface Area Results
Surface Area (sq ft)
-
sq ft
Surface Area (sq m)-
Paint Required (gallons)-
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Formula (Cylindrical Tank Volume)
V = π × r² × h
V = Volume
π = Pi (3.14159)
r = Radius
h = Height
Standards & References
API 650 Welded Tanks for Oil Storage
API 12F Shop Welded Tanks for Storage of Production Liquids
NFPA 30 Flammable and Combustible Liquids Code
Important Notes
Tank volume calculations are based on ideal geometric shapes.
Actual tank capacities may vary due to manufacturing tolerances and internal structures.
Partial fill calculations assume the tank is level.
Always verify calculations with tank strapping tables or certified drawings.