ContractorHandbook

How Many Square Feet Is a 10x20 Room?

Total area

200 sq ft

Ten feet by twenty 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.

  • Length10 ft
  • Width20 ft
  • How many rooms or areas this size1
  • Extra area to add0 sq ft

Total area200 sq ft

One area200 sq ft
Times 1, plus extra200 sq ft
Square yards22.22
Square meters18.58
Perimeter of one area60 ft

What else matters here

Two hundred square feet. This is the largest common self storage unit and it is also, near enough, a single car garage bay.

As a storage unit it is quoted as holding the contents of a two or three bedroom house, and it is roughly the footprint a car occupies with room to open a door. As a garage it is tight: a single bay is more comfortably 12 by 22, because 10 feet of width leaves about 2 feet on each side of a mid size car and that is before shelving. As a room, 200 square feet is a long narrow shape that reads as a bowling alley unless it is furnished in two zones.

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 10x20 room?

200 square feet, which is 22.22 square yards and 18.58 square meters.

What fits in a 10x20 storage unit?

It is normally advertised as a two or three bedroom house, or a car. It is the largest size most facilities offer as a standard unit.

Is 10x20 big enough for a one car garage?

It works but it is tight. Twelve by twenty two is the more comfortable single bay, because ten feet leaves only about two feet each side of the car.

Different numbers?

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

Other common sizes