Flooring Calculators
Tile, carpet, laminate and hardwood - waste sized to your layout. 5 free calculators.
Flooring is sold by the box or the roll, but the amount you actually need depends on the layout pattern as much as the square footage - a diagonal or herringbone tile pattern can waste far more material than a straight lay.
These calculators start from room square footage, apply a waste percentage that matches the pattern you're installing, and round up to full boxes or rolls, the units you'll actually buy at checkout.
Last reviewed September 2026
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All 5 Flooring calculators
Flooring Calculator
Flooring calculator for hardwood, laminate, and vinyl plank. Enter room size, box coverage, and layout to get the boxes to buy, with waste included.
Tile Calculator and Cost Estimator
Tile calculator for the tile, thinset, and grout a floor needs. Grout coverage comes from CUSTOM Building Products' table by tile size and joint width.
Carpet Calculator and Price Estimator
Carpet calculator for 12 ft and 15 ft rolls. Shows roll-width strips, linear feet of roll, and square yards to buy, plus an optional cost estimate.
Subfloor Calculator
Subfloor calculator for plywood or OSB sheets, from floor area and a 4x8 or 4x4 sheet size, with waste added and the count rounded up to whole sheets.
Tile Layout Calculator
Tile layout calculator for one room direction. Get edge cut widths and tile count in a row, and see whether the start must shift to avoid a thin sliver.