Square Feet to Square Miles Converter
Enter the area in square feet below to convert it to square miles.
Result in Square Miles:
Do you want to convert square miles to square feet?
On this page:
- Square Feet to Square Miles Converter
- How to Convert Square Feet to Square Miles
- What Is a Square Foot?
- What Is a Square Mile?
- Square Foot to Square Mile Conversion Table
- References
- More Square Foot & Square Mile Conversions
- Area Measurement IconConvert from Square Feet
- Area Measurement IconConvert to Square Miles
Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.
How to Convert Square Feet to Square Miles
To convert a measurement in square feet to a measurement in square miles, divide the area by the following conversion ratio: 27,878,400 square feet/square mile.
Since one square mile is equal to 27,878,400 square feet, you can use this simple formula to convert:
square miles = square feet ÷ 27,878,400
The area in square miles is equal to the area in square feet divided by 27,878,400.
For example, here's how to convert 50,000,000 square feet to square miles using the formula above.
square miles = (50,000,000 sq ft ÷ 27,878,400) = 1.793503 sq mi
Square feet and square miles are both units used to measure area. Keep reading to learn more about each unit of measure.
What Is a Square Foot?
One square foot is equivalent to the area of a square with sides that are each 1 foot in length.[1] One square foot is equal to 144 square inches or 0.092903 square meters .
The square foot is a US customary and imperial unit of area. A square foot is sometimes also referred to as a square ft. Square feet can be abbreviated as sq ft, and are also sometimes abbreviated as ft². For example, 1 square foot can be written as 1 sq ft or 1 ft².
You can use a square footage calculator to calculate the area of a space if you know its dimensions.
Learn more about square feet.
What Is a Square Mile?
One square mile is equal to the area of a square with sides that are each 1 mile long. One square mile is roughly equal to 2.59 square kilometers or 640 acres.
The square mile is a US customary and imperial unit of area. Square miles can be abbreviated as sq mi, and are also sometimes abbreviated as mi². For example, 1 square mile can be written as 1 sq mi or 1 mi².
Learn more about square miles.
Square Foot to Square Mile Conversion Table
| Square Feet | Square Miles |
|---|---|
| 1 sq ft | 0.00000003587 sq mi |
| 2 sq ft | 0.00000007174 sq mi |
| 3 sq ft | 0.00000010761 sq mi |
| 4 sq ft | 0.00000014348 sq mi |
| 5 sq ft | 0.00000017935 sq mi |
| 6 sq ft | 0.00000021522 sq mi |
| 7 sq ft | 0.00000025109 sq mi |
| 8 sq ft | 0.00000028696 sq mi |
| 9 sq ft | 0.00000032283 sq mi |
| 10 sq ft | 0.0000003587 sq mi |
| 100 sq ft | 0.000003587 sq mi |
| 1,000 sq ft | 0.00003587 sq mi |
| 10,000 sq ft | 0.000359 sq mi |
| 100,000 sq ft | 0.003587 sq mi |
| 1,000,000 sq ft | 0.03587 sq mi |
| 10,000,000 sq ft | 0.358701 sq mi |
| 100,000,000 sq ft | 3.587 sq mi |
References
- Merriam-Webster, square foot, https://www.merriam-webster.com/dictionary/square%20foot