How Many Square Feet Is a 16x16 Room?
Total area
256 sq ft
Sixteen feet by sixteen 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.
- Length16 ft
- Width16 ft
- How many rooms or areas this size1
- Extra area to add0 sq ft
Total area256 sq ft
| One area | 256 sq ft |
|---|---|
| Times 1, plus extra | 256 sq ft |
| Square yards | 28.44 |
| Square meters | 23.78 |
| Perimeter of one area | 64 ft |
What else matters here
Two hundred and fifty six square feet. It is a large room indoors and it is a very common deck and patio size outdoors, which is where the number usually comes from.
Outside, the area is only half the question. A deck over 30 inches above grade needs a guard in most jurisdictions, and a deck attached to the house needs a permit and an inspected ledger connection almost everywhere. A patio at grade usually needs neither, but it does need a slope of about a quarter inch per foot away from the house, which over 16 feet is four inches of fall. Forget that and the patio drains toward the foundation.
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 16x16 room?
256 square feet, which is 28.44 square yards and 23.78 square meters.
Is a 16x16 deck big enough?
It seats a table for six and a small seating group comfortably. It is one of the most common sizes built for exactly that reason.
How much should a 16 foot patio slope?
About a quarter inch per foot away from the house, which is four inches of fall across 16 feet.
The square footage calculator takes any dimensions you like and hands back the same list.