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Flooring calculator

How much flooring do you need? Add each area, pick a layout pattern and material, and get the square footage to order, boxes to buy and an installed cost range.

Units
Layout pattern (waste allowance)

Order

132 sq ft

120 sq ft + 10% waste

Boxes

7

Rounded up to whole boxes

Installed cost, Luxury vinyl plank (LVP)

$360-$1,200

$3-$10 per sq ft installed (published range). Estimate, not a quote.

Buy from one batch (lot) so the color matches, and keep a spare box for future repairs.

See this floor in your room

The numbers are free. To preview a new floor on your own photo with AI, create a free account. You'll brush the floor area in the studio.

Your photo stays in this browser until you sign up. Free account required for AI renders; eligible new accounts get free credits, and free results carry a small watermark.

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Estimates, sources

These are planning estimates from published national figures, not quotes. Local labor, materials and site conditions move real prices a lot. Get at least three local bids.

Installed cost by material

  • Solid hardwood: $6-$25 per sq ft installed
  • Engineered hardwood: $4.5-$16 per sq ft installed
  • Laminate: $3-$13 per sq ft installed
  • Luxury vinyl plank (LVP): $3-$10 per sq ft installed
  • Carpet: $3.5-$11 per sq ft installed
  • Tile: $15-$20 per sq ft installed

Published national ranges (HomeAdvisor), materials and labor together. Subfloor repair, stairs, removing old flooring and moving furniture are extra.

Why order extra

Cuts at walls, doorways and around cabinets waste material, and some boards will have defects. Flooring retailers advise 7% to 10% extra for a straight lay, 15% for diagonal and 15% to 20% for herringbone. Keep the leftovers for repairs. Tiling? Use the tile calculator for tile counts and grout joints.

How it works

  1. Measure the floor

    Length x width of each rectangle. Split L-shaped rooms into two.

  2. Pick the layout

    Straight lay needs about 10% extra; diagonal 15%; herringbone 20%.

  3. Enter box coverage

    Square feet per box, from the product label.

  4. Compare materials

    See the published installed range for hardwood, LVP, laminate, carpet and tile.

Questions

How do I calculate how much flooring I need?

Multiply length by width for each rectangular area, add them up, then add a waste allowance: about 10% for a straight lay, 15% for diagonal and 20% for herringbone. Divide by the coverage per box and round up.

How much extra flooring should I buy?

Retailers commonly recommend 7% to 10% extra for straight installs, 15% for diagonal and 15% to 20% for herringbone or complex patterns. Small or irregular rooms need the higher end.

How much does it cost to install flooring?

Published installed ranges per sq ft: hardwood about $6 to $25, engineered $4.50 to $16, laminate $3 to $13, LVP $3 to $10, carpet $3.50 to $11 and tile $15 to $20. These are national estimates, not quotes.

Can I see a new floor in my room before buying?

Yes. The calculator is free and needs no account. To preview a new floor on your own photo with AI, create a free account and brush the floor area in the studio.

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