🚰 Water Tank Calculator PRO
Capacity, water volume, weight, and cost for 4 tank shapes.
Tank + Water Level — updates as you type
Storage vessel with water volume. Capacity follows length, width and water depth.
1 Tank Shape
2 Dimensions
3 Cost & Details
Client Details
Results
Capacity
Water Volume
Weight
Water Tank Sizing Guide
Show formulas & tips ▼
Volume Formulas
Rectangular: V = L × W × H
Cylindrical:V = π × r² × H (r = diameter ÷ 2)
Hemispherical: V = (2/3) × π × r³
Capsule: V = π × r² × (H − 2r) + (4/3) × π × r³
Conversions
1 cubic foot = 7.48 US gallons = 28.32 liters
1 US gallon = 3.785 liters = 8.34 lb (water weight)
1 liter = 1 kg (water) = 2.205 lb
Tank Material Weight
| Material | Density (kg/m³) |
|---|---|
| Steel | 7,850 |
| Stainless Steel | 8,000 |
| Plastic (HDPE) | 950 |
| Concrete | 2,400 |
Drag to rotate — Scroll to zoom
Related Calculators
Frequently used together on the same project.
Client & Quote (prints on PDF & Excel)
Adjustments (applies to exports)
Contingency is added as a separate line on the exported cost summary. Waste % is printed as an advisory reminder.
Project notes (prints on PDF & Excel)
Result compare (A/B)
| Item | Pinned | Current | Change |
|---|---|---|---|
Saved rates auto-apply from your Price Library. Advanced details stay in your browser — nothing is uploaded except inside your own PDF/Excel exports.
Our الخزان calculator provides accurate material estimates. Enter dimensions and receive exact quantities and costs for your project.
📖 How to Use the الخزان Calculator
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📐 الخزان Formulas & Calculations
الخزان formulas and calculations.
⚠️ Common الخزان Mistakes
Measurement error
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💡 الخزان Pro Tips
Measure twice, cut once
Order 10% extra for waste
❓ الخزان Calculator FAQ
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الخزان project examples.
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✅Method, Sources & Review
Maintained by theBuildingCalc methods desk· Last reviewedSeptember 23, 2026. This calculator implements the standards and references below; every figure can be rechecked against the formulas and worked example on this page.
Results are estimates, not engineering advice. Verify against local codes and licensed professionals for structural, electrical, and gas work. See ourTerms. Spotted an error? Report it— corrections ship with the next review.