Square foot (ft²)
A square one foot on each side.
What is a square foot?
- Symbol
- ft²
- Quantity
- Area
- Unit system
- US customary
- Definition
- A square one foot on each side.
- Exact
- Yes, the value is exact by definition
- Source
- International yard and pound agreement (1959)
Common applications
Used in the United States, Canada and the United Kingdom for home sizes, office space and flooring.
Square foot in other area units
- 1 ft² = 92903.04 mm²Square millimeter
- 1 ft² = 929.0304 cm²Square centimeter
- 1 ft² = 0.09290304 m²Square foot to Square meter converter
- 1 ft² = 0.000009290304 haHectare
- 1 ft² = 9.290304e-8 km²Square kilometer
- 1 ft² = 144 in²Square inch
- 1 ft² ≈ 0.1111111111 yd²Square yard
- 1 ft² ≈ 0.00002295684114 acSquare foot to Acre converter
- 1 ft² ≈ 3.587006428e-8 mi²Square mile
Square foot quick reference
| Square foot | Square meter | Acre | Square millimeter |
|---|---|---|---|
| 1 ft² | = 0.09290304 m² | ≈ 0.00002295684114 ac | = 92903.04 mm² |
| 10 ft² | = 0.9290304 m² | ≈ 0.0002295684114 ac | = 929030.4 mm² |
| 100 ft² | = 9.290304 m² | ≈ 0.002295684114 ac | = 9290304 mm² |
| 1000 ft² | = 92.90304 m² | ≈ 0.02295684114 ac | = 92903040 mm² |
Where the square foot fits
The next smaller area unit is the square inch (in²). 1 ft² = 144 in², and 1 in² ≈ 0.006944444444 ft².
The next larger area unit is the square yard (yd²). 1 ft² ≈ 0.1111111111 yd², and 1 yd² = 9 ft².
Frequently asked questions
- How many square meters are in one square foot?
- One square foot = 0.09290304 m² (square meters).
- How many acres are in one square foot?
- One square foot ≈ 0.00002295684114 ac (acres).
- How many square millimeters are in one square foot?
- One square foot = 92903.04 mm² (square millimeters).