Square foot to Square inch Converter
Convert square feet to square inches with this free area converter. The exact relationship used on this page is 1 square foot = 144 square inches. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: Square inch = Square foot × 144
How to convert square feet to square inches
- Enter the value in square feet in the converter.
- Read the equivalent amount in square inches.
- Use the swap link if you need square inch to square foot instead.
- Check the table for common values without typing.
Worked examples
- 1 ft² = 144 in²
- 5 ft² = 720 in²
- 10 ft² = 1,440 in²
- 25 ft² = 3,600 in²
Conversion table
Common square feet values converted to square inches.
| ft² | in² |
|---|---|
| 1 | 144 |
| 2 | 288 |
| 3 | 432 |
| 4 | 576 |
| 5 | 720 |
| 6 | 864 |
| 7 | 1,008 |
| 8 | 1,152 |
| 9 | 1,296 |
| 10 | 1,440 |
| 20 | 2,880 |
| 50 | 7,200 |
| 100 | 14,400 |
| 250 | 36,000 |
| 500 | 72,000 |
| 1,000 | 144,000 |
About this conversion
Square foot (ft²) and Square inch (in²) are both area units. Area converters help with flooring, land, real estate listings, and fabric. Bookmark this URL when you convert square feet to square inches often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the square inch to square foot converter.
FAQ
How many square inches are in 1 square foot?+
1 square foot equals 144 square inches.
What is the formula to convert square feet to square inches?+
Square inch = Square foot × 144
How do I convert square feet to square inches by hand?+
Multiply the square foot value by 144. Example: 10 square feet × 144 = 1440 square inches.
Is this ft² to in² converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.