1 square foot to square inches
1 ft² = 144 in². Change the amount below, or read the formula and the reference table further down.
1 square foot equals
square inches
1 ft² = 144 in²
The formula
Square feet and square inches both measure area from the same zero, so a single multiplier does the job.
in² = ft² × 144
Going the other way? Convert square inches to square feet.
Square feet to square inches table
Values either side of 1 ft².
| Square feet (ft²) | Square inches (in²) |
|---|---|
| -4 | -576 |
| -3.5 | -504 |
| -3 | -432 |
| -2.5 | -360 |
| -2 | -288 |
| -1.5 | -216 |
| -1 | -144 |
| -0.5 | -72 |
| 0 | 0 |
| 0.5 | 72 |
| 1 | 144 |
| 1.5 | 216 |
| 2 | 288 |
| 2.5 | 360 |
| 3 | 432 |
| 3.5 | 504 |
| 4 | 576 |
| 4.5 | 648 |
| 5 | 720 |
| 5.5 | 792 |
| 6 | 864 |
Questions people ask
- How many square inches are in a square foot?
- One square foot equals 144 square inches.
- How do I convert square feet to square inches by hand?
- Multiply the number of square feet by 144. For a rough check, 144 is close enough for most everyday use.
- What is 1 square foot in square inches?
- 1 square foot is 144 square inches.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.