📐 Area Calculator

Calculate rectangle, circle and triangle areas.

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

    Rectangle = L×W; Circle = πr²; Triangle = ½×Base×Height

    Formula

    Rectangle = L×W; Circle = πr²; Triangle = ½×Base×Height

    Important limitation

    Use consistent units and convert the result as needed.

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    Continue your calculation

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