Flooring Calculator
ft
ft
%
sq ft/box
$
Total Sq Ft Needed
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Net Floor Area—
Waste Allowance—
Net Floor Area
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Total with Waste
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Boxes to Buy
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Estimated Cost
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Sq Meters
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Waste Sq Ft
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Why You Need a Waste Factor
Cuts at walls, around obstacles, and mistakes mean you always use more material than the raw floor area. Standard waste factors: 10% for straight-lay flooring, 15% for tiles set straight, and 20% for diagonal tile patterns.
How Many Boxes to Buy
Divide total square footage (with waste) by the coverage per box, then round up. Always buy an extra box or two if the flooring might be discontinued — matching later is often impossible.
Measuring Tips
Measure each room separately — L-shaped or irregular rooms should be broken into rectangles. For closets, include their area if they're getting the same flooring. Measure in feet with one decimal place (e.g., 12.5 ft) for accuracy.