Convert Square Feet to Square Inches
Convert Square Feet (ft²) to Square Inches (in²) instantly and accurately.
Conversion Formula
in² = ft² × 144
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.
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.
Quick Reference Table
| Square Feet (ft²) | Square Inches (in²) |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1440 in² |
| 25 ft² | 3600 in² |
| 50 ft² | 7200 in² |
| 100 ft² | 14400 in² |