1 square foot to square miles
1 ft² = 3.5870 × 10^-8 mi². Change the amount below, or read the formula and the reference table further down.
1 square foot equals
square miles
1 ft² = 3.5870 × 10^-8 mi²
The formula
Square feet and square miles both measure area from the same zero, so a single multiplier does the job.
mi² = ft² × 3.5870 × 10^-8
Going the other way? Convert square miles to square feet.
Square feet to square miles table
Values either side of 1 ft².
| Square feet (ft²) | Square miles (mi²) |
|---|---|
| -4 | -1.4348 × 10^-7 |
| -3.5 | -1.2555 × 10^-7 |
| -3 | -1.0761 × 10^-7 |
| -2.5 | -8.9675 × 10^-8 |
| -2 | -7.1740 × 10^-8 |
| -1.5 | -5.3805 × 10^-8 |
| -1 | -3.5870 × 10^-8 |
| -0.5 | -1.7935 × 10^-8 |
| 0 | 0 |
| 0.5 | 1.7935 × 10^-8 |
| 1 | 3.5870 × 10^-8 |
| 1.5 | 5.3805 × 10^-8 |
| 2 | 7.1740 × 10^-8 |
| 2.5 | 8.9675 × 10^-8 |
| 3 | 1.0761 × 10^-7 |
| 3.5 | 1.2555 × 10^-7 |
| 4 | 1.4348 × 10^-7 |
| 4.5 | 1.6142 × 10^-7 |
| 5 | 1.7935 × 10^-7 |
| 5.5 | 1.9729 × 10^-7 |
| 6 | 2.1522 × 10^-7 |
Questions people ask
- How many square miles are in a square foot?
- One square foot equals 3.5870 × 10^-8 square miles.
- How do I convert square feet to square miles by hand?
- Multiply the number of square feet by 3.5870 × 10^-8. For a rough check, 3.5870 × 10^-8 is close enough for most everyday use.
- What is 1 square foot in square miles?
- 1 square foot is 3.5870 × 10^-8 square miles.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.