How Many Square Feet Is a 9x9 Room?
Total area
81 sq ft
Nine feet by nine feet.
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.
- Length9 ft
- Width9 ft
- How many rooms or areas this size1
- Extra area to add0 sq ft
Total area81 sq ft
| One area | 81 sq ft |
|---|---|
| Times 1, plus extra | 81 sq ft |
| Square yards | 9 |
| Square meters | 7.53 |
| Perimeter of one area | 36 ft |
What else matters here
Eighty one square feet, and exactly nine square yards. That is not a coincidence, it is the definition: a square yard is three feet by three feet, so a nine foot square is three yards by three yards.
Divide square feet by nine, never by three.
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 9x9 room?
81 square feet, which is exactly 9 square yards and 7.53 square meters.
How do you convert square feet to square yards?
Divide by nine. A square yard is three feet by three feet, so it contains nine square feet, not three.
The square footage calculator takes any dimensions you like and hands back the same list.
Other common sizes
15 more sizes are answered on the square footage calculator page