square feet to square miles
Convert square foot to square mile — instant, free, with the formula shown.
1 ft²=3.5870e-8 mi²
How to convert square foot to square mile
To convert square foot to square mile, multiply by 3.5870e-8:
mi² = ft² × 3.5870e-8
For example, 10 ft² × 3.5870e-8 = 3.5870e-7 mi².
ft² to mi² conversion table
| square feet (ft²) | square miles (mi²) |
|---|---|
| 1 ft² | 3.5870e-8 mi² |
| 2 ft² | 7.1740e-8 mi² |
| 5 ft² | 1.7935e-7 mi² |
| 10 ft² | 3.5870e-7 mi² |
| 25 ft² | 8.9675e-7 mi² |
| 50 ft² | 1.7935e-6 mi² |
| 100 ft² | 3.5870e-6 mi² |
| 250 ft² | 8.9675e-6 mi² |
| 500 ft² | 1.7935e-5 mi² |
| 1000 ft² | 3.5870e-5 mi² |
Other square foot conversions
Convert to square mile from another unit
ft² to mi² — frequently asked
How many square miles are in 1 square foot?
1 square foot = 3.5870e-8 square miles (ft² × 3.5870e-8 = mi²).
What is the formula to convert square foot to square mile?
Multiply your square foot value by 3.5870e-8 to get square mile.
How do I convert 10 square feet to square miles?
10 ft² = 3.5870e-7 mi². For 100 ft² the answer is 3.5870e-6 mi². Use the calculator on this page for any other value.