ContractorHandbook

How Many Square Feet Is a 13x13 Room?

Total area

169 sq ft

Thirteen feet by thirteen feet.

length x widthextralength, ftwidtharea x how many, plus anything odd shaped, in feet, yards and meters
Every material calculator on the site starts here, which is why this one also gives square yards and square meters. Odd shapes get broken into rectangles and added on, because a rectangle is the only shape a tape measure is honest about.

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.

  • Length13 ft
  • Width13 ft
  • How many rooms or areas this size1
  • Extra area to add0 sq ft

Total area169 sq ft

One area169 sq ft
Times 1, plus extra169 sq ft
Square yards18.78
Square meters15.7
Perimeter of one area52 ft

What else matters here

A hundred and sixty nine square feet, or 15.7 square meters. The metric figure is on this page because a growing share of building products arrive with metric data sheets even in the United States.

Imported tile, European appliances, engineered flooring, insulation R values cross referenced against RSI, and almost every product specification that started life in Europe or Asia come in square meters. One square meter is 10.764 square feet, so a coverage figure quoted per square meter is nearly eleven times the per square foot number and it is easy to read the decimal in the wrong place. Convert once, write it down, and buy from the converted figure.

What this calculator assumes

  • Length times width, times how many areas are that size. For an L shaped room, split it into two rectangles and run this twice.
  • Square yards are square feet divided by nine, which is how carpet is still quoted in much of the country.

Questions people ask

How many square feet is a 13x13 room?

169 square feet, which is 18.78 square yards and 15.7 square meters.

How do you convert square feet to square meters?

Multiply by 0.0929, or divide by 10.764. One square meter is 10.764 square feet.

Why would I need square meters for a US project?

Imported tile, European appliances and many engineered products publish coverage and dimensions in metric, so the spec sheet and the tape measure do not match.

Different numbers?

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

Other common sizes