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💧 Water Tank Calculator

Calculate rectangular and cylindrical tank capacity.

Enter your values

Results are preliminary estimates. Use project-specific specifications, drawings, product data and local requirements for final decisions.

Result

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    Calculator guide

    How this calculator works

    Rectangular = L×W×H; Cylindrical = πr²H; 1 m³ = 1,000 L

    Formula

    Rectangular = L×W×H; Cylindrical = πr²H; 1 m³ = 1,000 L

    Important limitation

    Usable capacity can differ from geometric capacity.

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    Important: 5iBuild calculations are general estimates. Verify drawings, specifications, product data, local rates and applicable codes or regulations before construction or procurement.