ContractorHandbook

How Much Flooring for 500 Square Feet?

Boxes to order

25 boxes

500 square feet of floor, ten percent waste, boxes of 22.5 square feet.

It does not stop at a number.

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waste10%room area, sq ftone box covers a fixed number of square feetarea with waste / coverage per box = boxes, rounded up
Flooring is sold by the box and installed by the plank, so the only number that matters on the label is the square feet per box. The waste allowance covers the cut at each wall and the offcut that starts the next row.

How that number is worked out

These are the figures this page was built with and every line the calculator produces from them. Change anything above and all of it moves.

  • Floor area500 sq ft
  • Coverage per box or carton22.5 sq ft
  • Waste allowance10 %

Boxes to order25 boxes

Floor area500 sq ft
With 10% waste550 sq ft
Boxes at 22.5 sq ft25
Coverage bought562.5 sq ft
Left over62.5 sq ftkeep it for repairs

The material list this produces

Flooring, boxes25
Underlayment, sq ft500
Transition strips, each2

Waste allowance compared

Waste is set by how you lay it, not by how careful you are. Straight lay to herringbone, same room.

Waste allowanceBoxes to orderWith 10% wasteLeft over
5%24 boxes525 sq ft40 sq ft
10%25 boxes550 sq ft62.5 sq ft
15%26 boxes575 sq ft85 sq ft
20%27 boxes600 sq ft107.5 sq ft

What else matters here

Five hundred square feet with ten percent is 550, twenty five cartons, 562.5 bought.

This is a good size to see what the waste allowance actually costs, because the answer is boxes rather than percentages. At five percent it is twenty four cartons, at ten it is twenty five, at fifteen twenty six, and at twenty percent twenty seven. The whole range from a plain straight lay to a full herringbone is three boxes.

Which means the pattern decision is cheap and the guess about the pattern is not. Pick five percent only for a simple rectangle with long uninterrupted runs. Ten covers a normal room. Fifteen covers a diagonal lay or a plan cut up with closets, angles and islands. Twenty is for herringbone and chevron, where every plank is cut twice. Ordering short costs a second delivery and a dye lot risk, and ordering long costs one carton you keep anyway.

What this calculator assumes

  • 10 percent waste covers a straight lay in a simple rectangle. Go to 15 for a diagonal or herringbone lay, and 20 if the room is cut up with closets and angles.
  • Buy the whole job in one delivery. Dye lot and batch shade move between production runs, and a single replacement box six months later will not match.

Questions people ask

How many boxes of flooring for 500 square feet?

About 25 boxes at 22.5 square feet each, covering 500 square feet with a ten percent waste allowance.

How much difference does the waste allowance make?

At 500 square feet it is 24 boxes at five percent and 27 at twenty. Three boxes covers the whole range from a straight lay to herringbone.

What waste allowance is right for herringbone?

Around twenty percent. Every plank is cut on both ends, and the pattern has to be set out from the center, so the offcuts are less reusable than in a straight lay.

Different numbers?

The flooring calculator takes any dimensions you like and hands back the same list.

Other common sizes