Skip to main content

Flooring Calculator

Estimate how much hardwood, laminate, vinyl (LVP) or similar flooring you need — including waste and boxes.

Last updated: September 2026 · Reviewed for standard hardwood, laminate and LVP estimating

Please enter room length & width, or total area greater than 0.

How to Use This Flooring Calculator

  • Enter room length and width, or total area in sq ft
  • Choose a waste factor (10% for most rooms)
  • Enter coverage per box from the product label
  • Optionally add price per box or per sq ft for a cost estimate
  • Click Calculate Flooring for area and boxes needed

Common Room Examples (10% Waste)

Quick reference for popular room sizes. Boxes assume 20 sq ft coverage per box (common for many LVP/laminate products). Adjust for your product’s actual coverage.

Room Size Room Area With 10% Waste Boxes (20 sq ft)
10 × 12 ft 120 sq ft 132 sq ft 7
12 × 15 ft 180 sq ft 198 sq ft 10
15 × 20 ft 300 sq ft 330 sq ft 17
20 × 20 ft 400 sq ft 440 sq ft 22

Always use the coverage printed on your product box. Diagonal or patterned installs may need 15%+ waste.

Recommended Waste Factor

Layout / Room Waste %
Simple rectangle, straight lay5 – 10%
Multiple closets or angles10 – 12%
Diagonal or herringbone15 – 20%
Large open area, minimal cuts5 – 8%

Flooring Material Comparison

Quick side-by-side guide to help you choose before you estimate boxes and cost above.

Material Best for Water resistance DIY difficulty Relative cost Typical waste
LVP / LVT Kitchens, baths, basements, high traffic Excellent (many waterproof) Easy – click-lock $ – $$ 8 – 12%
Laminate Bedrooms, living rooms, budget projects Low – avoid standing water Easy – click-lock $ 8 – 12%
Engineered hardwood Main living areas; can go over more subfloors Moderate – not for wet zones Medium $$ – $$$ 8 – 15%
Solid hardwood Classic rooms; can be refinished many times Poor – expands with moisture Harder – nail/glue $$$ 8 – 15%
Ceramic / porcelain tile Baths, entryways, wet areas Excellent Harder – thinset & cuts $ – $$$ 10 – 15%
Carpet Bedrooms, low-traffic comfort areas Poor when wet Medium – stretch-in $ – $$ 5 – 10%

After you pick a product, enter its coverage per box above. For tile layouts use the tile calculator; for paint after flooring, see the paint calculator.

Typical Box Coverage

Flooring Type Common Coverage per Box
Laminate15 – 25 sq ft
Luxury Vinyl Plank (LVP)18 – 30 sq ft
Engineered hardwood20 – 30 sq ft
Solid hardwoodVaries widely — check label
Vinyl tile / LVT20 – 40 sq ft

Always use the exact coverage printed on your product box.

Formulas Used

Room area = Length × Width

Area with waste = Room area × (1 + Waste%)

Boxes needed = ceil(Area with waste ÷ Coverage per box)

Flooring Tips

  • Acclimate flooring in the room 48–72 hours before install
  • Buy from the same lot to avoid shade differences
  • Keep extra boxes for future repairs
  • Check subfloor flatness — most warranties require it
  • Leave expansion gaps at walls as the manufacturer specifies

Frequently Asked Questions

Multiply room length by width to get square footage, add a waste factor (usually 10%), then divide by the coverage per box. Always round up to whole boxes. This calculator does it for you.
Use 5–10% for simple rectangular rooms. Use 10–15% for rooms with many angles or closets. Diagonal or complex patterns may need 15–20%.
It varies by product. Laminate and LVP boxes often cover 15–30 sq ft. Always check the label on the box or product page and enter that number above.
Yes. Keep 5–10% extra for future repairs. Dye lots and styles change, so matching later can be difficult or impossible.
Yes. Enter your room size and the coverage per box for any plank-style flooring — hardwood, laminate, LVP, LVT, engineered wood, and similar products.
Split the room into rectangles, calculate each area, and add them. Enter the total in the “total area” field, or use length × width for a simple rectangle.
Yes. The Tile Calculator is for ceramic/porcelain tiles with grout gaps. This Flooring Calculator is for plank and sheet products (hardwood, laminate, vinyl) sold by the box.

Related measurements

Confirm room area with the square footage calculator. For tile floors use the tile calculator. Walls after install: paint calculator. Browse all construction calculators.