Convert square feet 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
Common values, rounded for reading.
| Square feet (ft²) | Square inches (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 |
| 15 | 2,160 |
| 20 | 2,880 |
| 25 | 3,600 |
| 30 | 4,320 |
| 40 | 5,760 |
| 50 | 7,200 |
| 75 | 10,800 |
| 100 | 14,400 |
| 250 | 36,000 |
| 500 | 72,000 |
| 1,000 | 144,000 |
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.