US Standard Area
These are the most common measurements:
Small surfaces are usually measured in square inches, rooms and buildings in square feet, carpet in square yards, property in acres, and territory in square miles.
Area is length by length, so a square inch is a square that is 1 inch on each side.
The Unit is inch × inch, which can be written many ways, such as:
- sq in
- sq inch
- square inch
- etc ...
A square foot is a square that is 1 foot on each side.
Here Ariel the Dog sits next to a square foot made with tape measures.
The Unit is foot × foot, which can be written many ways, such as
A square yard is a square that is 1 yard on each side. It is equal to 9 square feet.
One acre is equal to 43,560 square feet.
Acres are commonly used to measure land.
A square mile is a square that is 1 mile on each side.
Square miles are commonly used to measure large areas of land.
A square inch is about:
- 6½ square centimeters
An acre is:
- 4,840 square yards
- 43,560 square feet
- 4,046.8564224 square metres
- a square with sides about 208.71 feet (or 69.57 yards)
- about 0.4 hectare (40% of the area of a hectare)
- a bit less than a football field
- about 16 tennis courts
A square mile is:
- 640 acres