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Linear feet to square feet calculator

Convert a length of material to area: square feet = linear feet × width in inches ÷ 12.

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Answer

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Convert a length of material to area: square feet = linear feet × width in inches ÷ 12.

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Precision and calculation record
Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.
Step-by-step calculation
Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.
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    Save the current answer, then change an input to compare. This clears when you leave.
    Formula and assumptions
    Use actual face width, not nominal lumber width or unused overlap. The result is a rectangle-area sum; it does not account for cutting waste.
    Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.
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    Updated 
    Using Linear feet to square feet calculator
    Convert a length of material to area: square feet = linear feet × width in inches ÷ 12.
    Use actual face width, not nominal lumber width or unused overlap. The result is a rectangle-area sum; it does not account for cutting waste.
    Next: Board foot calculator
    A worked example
    Example inputs: total length (feet) = 100, material width (inches) = 6. Area (square feet) = 50.
    Before you use the result
    Use actual face width, not nominal lumber width or unused overlap. The result is a rectangle-area sum; it does not account for cutting waste.
    Example results for total length (feet)
    These examples use Material width (inches): 6. They are reference calculations, not recommended settings.
    Total length (feet)Area (square feet)
    5025
    10050
    200100
    Cite this page
    ToolOctopus. “Linear feet to square feet calculator.” Updated 2026-09-26. https://tooloctopus.com/linear-feet-to-square-feet-calculator.
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