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Calculation Machine

Carpet Calculator

Square yards of carpet and cost.

Reviewed by the Calculation Machine team · How we check our maths

Your values

ⓘ Live results

Results
Carpet needed
22 sq yards
Square feet with waste
198 sq ft
Room area
180 sq ft
Estimated material cost
$704.00
Padding needed
22 sq yards

Quick answer

Carpet is sold by the square yard in 12 ft rolls, so allow 10–15% waste for seams and offcuts.

The formula

Square yards = sq ft ÷ 9

Worked example

Worked example

Using the values the calculator loads with.

Inputs

  • Room length15 ft
  • Room width12 ft
  • Waste allowance10 %
  • Price per square yard32 $

Result

  • Carpet needed22 sq yards
  • Square feet with waste198 sq ft
  • Room area180 sq ft
  • Estimated material cost$704.00
  • Padding needed22 sq yards

How to use the Carpet Calculator

  1. 1Measure the room at its widest points.
  2. 2Add a waste allowance of 10–15%.
  3. 3Enter your price per square yard.

Frequently asked questions

Why 12 ft rolls?

Standard carpet width — rooms wider than 12 ft need a seam and more waste.

Is padding extra?

Yes, budget separately at $3–6 per square yard.

About this calculator