EngiRef / Area conversion
Convert Square Foots to Square Inches (ft² to in²)
1 ft² = 144 in². Convert square foots to square inches with the exact factor, a common-values table and a free converter.
Conversion factor
in² = ft² × 144
1 ft² = 144 in²
Multiply by 144 in² to go from square foots to square inches, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
ft² to in² table
| Square Foots (ft²) | Square Inches (in²) |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1440 in² |
| 20 ft² | 2880 in² |
| 50 ft² | 7200 in² |
| 100 ft² | 14400 in² |
Every figure is computed at build time by the site’s own converter from the area unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many square inches are in one square foot?
One square foot is 144 in², so 100 ft² is 14400 in².
What is the formula to convert square foots to square inches?
in² = ft² × 144. Multiply the value in square foots by 144 to get square inches.
How do I convert square inches back to square foots?
ft² = in² × 0.00694444444, so 1 in² is 0.00694444444 ft². The in² to ft² page carries the same table in that direction.