Square Foot to Square Inch
1 Square Foot = 144 Square Inch
Conversion Formula
To convert Square Foot to Square Inch, multiply the value by 144.
Square Foot × 144 = Square Inch
Quick Reference
| ft² | in² |
|---|---|
| 1 | 144 |
| 5 | 720 |
| 10 | 1440 |
| 25 | 3600 |
| 50 | 7200 |
| 100 | 14400 |
| 500 | 72000 |
| 1000 | 144000 |
What is Square Foot?
The square foot (symbol: ft²) is an imperial and US customary unit of area.
It is defined as the area of a square with sides of one foot in length. One square foot is equal to 144 square inches or approximately 0.0929 square meters.
Common Uses
Square feet are widely used in the United States, Canada, and Hong Kong to express the floor area of apartments, houses, and office buildings.
What is Square Inch?
The square inch (symbol: in²) is a unit of area in the imperial and US customary systems.
It is defined as the area of a square with sides of one inch in length. One square inch is exactly 645.16 square millimeters.
Common Uses
Square inches are common in the United States and some other territories for measuring small surface areas, such as the area of a computer screen (for calculating DPI) or pressure (measured in PSI — pounds per square inch).
How many square inch are in a square foot?
There are 144 square inch in 1 square foot.