Convert square inches to square feet
Input the number of square inches you want to convert to square feet.
How to Convert Square Inches to Square Feet
The square inch and square foot are both units of area. By definition, 1 square foot equals exactly 144 square inches. This means to convert square inches to square feet, you divide by 144.
Formula
Step-by-Step Example
Convert 5 in² to square feet:
We need to convert square inches to square feet
Since 1 ft² = 144 in², divide by 144
5 ÷ 144 = 0.0347222222
5 in² = 0.0347222222 ft²
Square Inch to Square Foot Conversion Table
Quick reference table for common square inch to square foot conversions. Click any value for detailed calculation.
| Square Inches (in²) | Square Feet (ft²) |
|---|---|
| 0.1 in² | 0.0006944444 ft² |
| 0.5 in² | 0.0034722222 ft² |
| 1 in² | 0.0069444444 ft² |
| 2 in² | 0.0138888889 ft² |
| 5 in² | 0.0347222222 ft² |
| 10 in² | 0.0694444444 ft² |
| 25 in² | 0.1736111111 ft² |
| 50 in² | 0.3472222222 ft² |
| 100 in² | 0.6944444444 ft² |
About These Units
Square Inch (in²)
A square inch (in² or sq in) equals 6.4516 square centimeters or 645.16 square millimeters. Square inches measure small surfaces, screen sizes, and component dimensions. Monitor/TV screens are measured diagonally, but area is calculated in square inches.
Square Foot (ft²)
A square foot (ft² or sq ft) equals 144 square inches or 0.0929 square meters. Square feet are the standard unit for real estate, home sizes, and floor plans in the United States. Average US home: 2,500 sq ft. One square meter equals 10.764 square feet.
Frequently Asked Questions
How do I convert square inches to square feet?
To convert square inches to square feet, divide the value by 144. For example, 10 in² = 0.0694444444 ft².
How many square feet are in 1 square inch?
1 square inch equals 0.0069444444 square feet.
What is the formula for square inches to square feet?
The formula is: ft² = in² ÷ 144.