Convert Square Inches to Square Feet
Convert Square Inches (in²) to Square Feet (ft²) instantly and accurately.
Conversion Formula
ft² = in² × 0.006944444444
About Square Inches
A square inch (in²) is an imperial unit of area equal to a square with sides of one inch (25.4 mm × 25.4 mm). It is commonly used in the United States for measuring small areas like fabric swatches, screen sizes, or printed materials. A standard business card is about 6 in², and a typical smartphone screen might be 15-20 in². This unit remains prevalent in American manufacturing, printing, and retail.
About Square Feet
A square foot (ft²) is an imperial unit of area equal to a square with sides of one foot (12 in × 12 in or 144 in²). It is the standard for measuring floor space in the United States and some other countries. A typical bedroom is 100-150 ft², and the average American house is roughly 2,000-2,500 ft². This unit dominates real estate listings, flooring sales, and construction in countries using imperial measurements.
Quick Reference Table
| Square Inches (in²) | Square Feet (ft²) |
|---|---|
| 1 in² | 0.00694444 ft² |
| 2 in² | 0.0138889 ft² |
| 5 in² | 0.0347222 ft² |
| 10 in² | 0.0694444 ft² |
| 25 in² | 0.173611 ft² |
| 50 in² | 0.347222 ft² |
| 100 in² | 0.694444 ft² |