Calculate the liquid storage capacity of rectangular, cylindrical, and capsule-shaped tanks in multiple units.
Tank Geometry
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in
Storage Capacity
Plotting capacity?
Select your tank profile and enter internal dimensions to determine its total holding volume.
About this calculator
Overview
Sizing storage tanks correctly is vital for industrial process planning, rainwater harvesting, and chemical storage. This tool calculates the total internal volume for common stationary and transport tank shapes. For horizontal tanks with rounded ends (capsules), it combines cylindrical volume with spherical hemispherical offsets to provide an accurate total capacity estimate.
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Pro Tips
Always measure the <strong>internal</strong> dimensions of the tank; wall thickness (especially for plastic tanks) can reduce volume by 2-5%.
In metric regions, 1 cubic meter ($1m^3$) is exactly equal to 1,000 liters.
Consider a 10% 'vapor space' or 'headroom' at the top of the tank to prevent industrial overflow during thermal expansion.
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Fun Facts
"1 US Gallon is equal to exactly 231 cubic inches (approx 3.785 liters)."
"Liquid weight is a major structural concern; a full 1,000-gallon water tank weighs over 8,300 lbs (3,760 kg)."
"For horizontal cylinders, the 'partial fill' volume is non-linear and much harder to calculate than total capacity."
Formula: Volume (Cylinder) = π × r² × Height; Volume (Rectangle) = L × W × H
