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Flooring Calculator

Estimate how much flooring material to order, with a waste allowance based on material and layout.

Computed in your browser — nothing you enter is uploaded. Figures are presented in United States units and terminology, and each formula’s basis is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.0

Market
Imperial · sales tax
13 ft11.5 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Estimated flooring needed

161.5 ft²

High confidence
Room area
149.5 ft²
Waste factor applied
8 %

At the values currently entered, the result works out to 161 ft². The largest intermediate quantity is room area, at 150 ft² — check that step first if the total looks off. Figures are shown in United States units and terminology; switch the market above if you are building elsewhere.

Estimated cost

$646 - $2,422

  • Flooring, materials + installation$646 - $2,422

Estimated national-average pricing, adjusted by a rough regional multiplier — not a quote and not verified for your specific location or supplier. Last verified 2026-08-25.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.

Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Regulatory standards & verification citations

  • Waste factor ranges: 7-10% for straight-lay hardwood, 12-15% for diagonal hardwood, 5-10% for straight laminate/LVP, 10% for straight-set tile, 15% for diagonal tile — standard flooring-industry rules of thumb

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why does the waste factor change with material?
Different materials and layouts lose different amounts to cuts, breakage, and pattern-matching. Diagonal layouts and small tiles need more extra material than a simple straight-lay pattern.
Should I round up to full boxes?
Yes — most flooring is sold by the box covering a fixed area. Divide this estimate by your product's box coverage and round up to the next full box.
Does this include underlayment or transition strips?
No — this estimates the flooring material itself only. Underlayment, adhesive, and trim are calculated separately based on your specific product.