# Square Feet to Square Miles Converter

Enter the area in square feet below to get the value converted to square miles.

**Results in Square Miles:**

Do you want to convert square miles to square feet?

## How to Convert Square Feet to Square Miles

To convert a measurement in square feet to a measurement in square miles, multiply the area by the following conversion ratio: 3.587E-8 square miles/square foot.

Since one square foot is equal to 3.587E-8 square miles, you can use this simple formula to convert:

The area in square miles is equal to the area in square feet multiplied by 3.587E-8.

**For example,**here's how to convert 50,000,000 square feet to square miles using the formula above.

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

## More Square Foot & Square Mile Conversions

- square feet to acres
- square feet to square yards
- square feet to square inches
- square feet to square kilometers
- square feet to square meters
- square feet to square centimeters
- square feet to square millimeters
- square feet to hectares
- square feet to ares
- acres to square miles
- square yards to square miles
- square inches to square miles
- square kilometers to square miles
- square meters to square miles
- square centimeters to square miles
- square millimeters to square miles
- hectares to square miles
- ares to square miles