Square Inches to Square Feet Converter
1 square inch ≈ 0.00694444444 square feet
1 square inch equals 0.00694444 square feet
How to convert square inches to square feet
Area factors are squared length factors: 1 ft² = (0.3048 m)². The acre here uses international feet; historic US survey acres differ slightly.
ft² = in² × 0.006944444444One square inch is 0.006944444444 square feet, so a single multiplication converts any value.
0.0694444 ft² ≈ 10 × 0.006944444444Square inches to square feet conversion table
Common values in square inches, converted to square feet.
| Square inches (in²) | Square feet (ft²) |
|---|---|
| 1 | 0.0069444444 |
| 2 | 0.013888889 |
| 3 | 0.020833333 |
| 4 | 0.027777778 |
| 5 | 0.034722222 |
| 10 | 0.069444444 |
| 20 | 0.13888889 |
| 25 | 0.17361111 |
| 50 | 0.34722222 |
| 100 | 0.69444444 |
| 250 | 1.7361111 |
| 500 | 3.4722222 |
| 1,000 | 6.9444444 |
About these units
square inchin²
The area of a square one inch on each side: exactly 6.4516 cm².
square footft²
The area of a square one foot on each side. The standard unit for US floor area.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.