Convert square feet to square inches
1 ft² = 144 in² — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
144in²
1 ft² = 144 in²
How to convert square feet to square inches
Multiply the number of square feet by 144 to get square inches.
The exact factor is 144 .
Square foot to Square inch conversion table
| Square feet (ft²) | Square inches (in²) |
|---|---|
| 1 ft² | 144 |
| 2 ft² | 288 |
| 3 ft² | 432 |
| 5 ft² | 720 |
| 10 ft² | 1440 |
| 20 ft² | 2880 |
| 25 ft² | 3600 |
| 50 ft² | 7200 |
| 100 ft² | 14 400 |
| 250 ft² | 36 000 |
| 500 ft² | 72 000 |
| 1000 ft² | 144 000 |
Square inch to Square foot conversion table
| Square inches (in²) | Square feet (ft²) |
|---|---|
| 1 in² | 0.006 944 444 4 |
| 2 in² | 0.013 888 889 |
| 3 in² | 0.020 833 333 |
| 5 in² | 0.034 722 222 |
| 10 in² | 0.069 444 444 |
| 20 in² | 0.138 888 89 |
| 25 in² | 0.173 611 11 |
| 50 in² | 0.347 222 22 |
| 100 in² | 0.694 444 44 |
| 250 in² | 1.736 111 1 |
| 500 in² | 3.472 222 2 |
| 1000 in² | 6.944 444 4 |
Frequently asked
How many square inches are in a square foot?
One square foot equals 144 square inches (ft² → in²). That figure is exact, not rounded.
How do you convert square feet to square inches?
Multiply the number of square feet by 144 to get square inches.
What is 1 in² in square feet?
One square inch is 0.006944444444 square feet.
What is 10 ft² in in²?
10 ft² = 1440 in².