Square feet (ft²) to Square inches (in²) Conversion
Square feet
The square foot is a unit of area equal to exactly 0.09290304 square metres (the square of 0.3048 m). It is the primary unit for measuring floor area and property size in the United States and United Kingdom, and appears in real estate listings, construction blueprints, and rental agreements. Average apartment sizes in the US are commonly described in square feet, where a studio apartment might be 400–600 ft².
Square inches
The square inch is a unit of area equal to exactly 6.4516 cm² (the square of 2.54 cm). It is used in engineering for specifying material cross-sections, pressure calculations (pounds per square inch = psi), and the dimensions of small components. Tile and flooring materials in the United States are sometimes measured in square inches for small-format tiles.
| Square feet (ft²) | Square inches (in²) |
|---|---|
| 0.1 ft² | 14.40 in² |
| 1 ft² | 144.00 in² |
| 2 ft² | 288.00 in² |
| 3 ft² | 432.00 in² |
| 5 ft² | 720.00 in² |
| 10 ft² | 1,440.00 in² |
| 20 ft² | 2,880.00 in² |
| 30 ft² | 4,320.00 in² |
| 50 ft² | 7,200.00 in² |
| 100 ft² | 14,400.00 in² |
| 1000 ft² | 144,000.00 in² |
Frequently Asked Questions (FAQ)
How many square inches are in 1 square feet?
1 square feet (ft²) is exactly 144.000 square inches (in²).
How do I convert square feet to square inches?
Multiply the value in square feet by 144.000 to get the result in square inches. Or use the converter above — type any number and see the result instantly.