Tank Volume Calculator
Calculate the storage capacity of various tank shapes including rectangular, cylindrical, and spherical tanks. Ideal for water and fuel storage.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
Tank Volume Calculator
Calculate volume of storage tanks
📐 Formula & Method
Rectangular Tank
Use positive internal dimensions in metres.
Cylindrical Tank
D is internal diameter and H is tank height or cylinder length.
Spherical Tank
D is internal sphere diameter. This calculates full sphere capacity only.
📋 How to Use
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1
Select the shape of your storage tank.
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2
Enter the required dimensions (length, width, height, or diameter).
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3
Ensure all measurements are in the same unit.
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4
The calculator will show the total capacity in cubic units and liquid volume.
Estimating Storage Tank Capacity
Whether you are installing a new water tank or checking the capacity of an existing fuel reservoir, accurate volume calculation is key. Different shapes require different mathematical approaches.
Our tank volume calculator simplifies this process by providing a unified interface for the most common tank geometries used in industrial and residential settings.
🔬 Methodology & Accuracy
Formula: Applies full-tank internal geometry only. Results assume dimensions are metres and convert m3 to litres and US gallons.
Data sources: Standard solid geometry formulas and SI volume conversions.
Last reviewed: May 2026 · General formula used: Rectangular Tank · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.