1 square foot (ft²) = 144 square inches (in²). To convert, multiply by 144: in² = ft² × 144. For example, 5 ft² = 720 in².
in² = ft² × 144
Square feet to square inches table
| Square feet (ft²) | Square inches (in²) |
|---|---|
| 1 | 144 |
| 2 | 288 |
| 3 | 432 |
| 4 | 576 |
| 5 | 720 |
| 10 | 1,440 |
| 20 | 2,880 |
| 25 | 3,600 |
| 50 | 7,200 |
| 100 | 14,400 |
| 250 | 36,000 |
| 500 | 72,000 |
| 1,000 | 144,000 |
The two units
Square foot (ft²). A square one foot on each side.
Square inch (in²). A square one inch on each side.
Because both units are defined in terms of the same base unit, the factor 144 is exact, not a rounded measurement.
Convert square feet to other units
- Square feet to square meters — 1 ft² = 0.09290304 m²
- Square feet to square kilometers — 1 ft² = 9.290304e-8 km²
- Square feet to square centimeters — 1 ft² = 929.0304 cm²
- Square feet to hectares — 1 ft² = 0.0000092903 ha
- Square feet to acres — 1 ft² = 0.0000229568 ac
- Square feet to square yards — 1 ft² = 0.1111111111 yd²
- Square feet to square miles — 1 ft² = 3.587006e-8 mi²
Convert other units to square inches
Questions people ask
- How many square inches are in a square foot?
- 144, exactly.
- How do you convert square feet to square inches?
- in² = ft² × 144. It is the same as dividing by 0.0069444444.
- How do you convert square inches back to square feet?
- ft² = in² ÷ 144. See square inches to square feet.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
Legal entity
Devansh Yadav
Moradabad, Uttar Pradesh
Governing law: Courts at Moradabad, Uttar Pradesh
Phone: +91 8433475698
Legal: legal@analyzeit.in