Square Foot to Square Inch Conversion
Convert square foot to square inch with precision. Enter values and get instant conversions.
Area Converter
1 Square Foot = 0 Square Inch
Common Conversions
About Square Foot to Square Inch Conversion
Converting from Square Foot to Square Inch is a common area conversion.
This online converter allows you to easily convert between square foot and square inch, providing instant results with high precision.
Square Foot
Definition: A square foot (symbol: ft²) is an imperial and US customary unit of area equal to a square with 1 foot (12 inches) sides. One square foot equals exactly 0.09290304 square meters or 144 square inches.
History: Dates back to ancient measurement systems based on human dimensions. The international foot definition of 1959 (exactly 0.3048 meters) standardized the square foot in metric terms.
Current use: The primary unit for real estate measurements in the United States (home sizes, office spaces). Also used in construction (material estimates) and architecture in countries using imperial units. The UK uses square meters officially but square feet persists in informal contexts.
Square Inch
Definition: A square inch (symbol: in²) is an imperial and US customary unit of area equal to a square with 1 inch sides. One square inch equals exactly 6.4516 square centimeters or 0.00694 square feet.
History: Originated from the Roman 'uncia' (1/12 of a foot). The international inch definition of 1959 (exactly 25.4 mm) standardized the square inch in metric terms.
Current use: Used in engineering (stress calculations), manufacturing (material specifications), and electronics (chip sizes) in the US. Common for measuring small areas where imperial units are preferred.
Details
- From: Square Foot
- To: Square Inch
- Formula: 1 Square Foot = 144.0000000000 Square Inch
- Example: 25 Square Foot = 3600.0000000000 Square Inch
Square Foot to Square Inch Conversion Table
| Square Foot | Square Inch |
|---|---|
| 0.01 | 1.44 |
| 0.1 | 14.4 |
| 1 | 144 |
| 2 | 288 |
| 3 | 432 |
| 5 | 720 |
| 10 | 1440 |
| 20 | 2880 |
| 50 | 7200 |
| 100 | 14400 |
| 1000 | 144000 |