# Convert Acres to Square Miles

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

**Results in Square Miles:**

## How to Convert Acres to Square Miles

To convert a acre measurement to a square mile measurement, multiply the area by the conversion ratio. One acre is equal to 0.001563 square miles, so use this simple formula to convert:

The area in square miles is equal to the acres multiplied by 0.001563.

**For example,**here's how to convert 5 acres to square miles using the formula above.

Acres and square miles are both units used to measure area. Keep reading to learn more about each unit of measure.

## Acres

One acre is defined as the area equal to a space that is one chain (66 ft) by one furlong (660 ft), or 10 square chains. That's equal to 43,560 square feet for those unfamiliar with those units of measure.

The acre is a US customary and imperial unit of area. Acres can be abbreviated as *ac*, for example 1 acre can be written as 1 ac.

Try our acreage calculator to find the area of a plot of land in acres by locating the boundaries on a map.

## Square Miles

One square mile is equal to the area of a square with sides that are 1 mile long. One square mile is roughly equal to 2.59 square kilometers.

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.

## Acre Measurements and Equivalent Square Mile Conversions

Acres | Square Miles |
---|---|

1 ac | 0.001563 sq mi |

2 ac | 0.003125 sq mi |

3 ac | 0.004688 sq mi |

4 ac | 0.00625 sq mi |

5 ac | 0.007813 sq mi |

6 ac | 0.009375 sq mi |

7 ac | 0.010938 sq mi |

8 ac | 0.0125 sq mi |

9 ac | 0.014063 sq mi |

10 ac | 0.015625 sq mi |

11 ac | 0.017188 sq mi |

12 ac | 0.01875 sq mi |

13 ac | 0.020313 sq mi |

14 ac | 0.021875 sq mi |

15 ac | 0.023438 sq mi |

16 ac | 0.025 sq mi |

17 ac | 0.026563 sq mi |

18 ac | 0.028125 sq mi |

19 ac | 0.029688 sq mi |

20 ac | 0.03125 sq mi |

21 ac | 0.032813 sq mi |

22 ac | 0.034375 sq mi |

23 ac | 0.035938 sq mi |

24 ac | 0.0375 sq mi |

25 ac | 0.039063 sq mi |

26 ac | 0.040625 sq mi |

27 ac | 0.042188 sq mi |

28 ac | 0.04375 sq mi |

29 ac | 0.045313 sq mi |

30 ac | 0.046875 sq mi |

31 ac | 0.048438 sq mi |

32 ac | 0.05 sq mi |

33 ac | 0.051563 sq mi |

34 ac | 0.053125 sq mi |

35 ac | 0.054688 sq mi |

36 ac | 0.05625 sq mi |

37 ac | 0.057813 sq mi |

38 ac | 0.059375 sq mi |

39 ac | 0.060938 sq mi |

40 ac | 0.0625 sq mi |

## More Acre Area Conversions

**US Customary**

- Convert to Square Yards
- 1 ac is equal to 4,840 square yards
- Convert to Square Feet
- 1 ac is equal to 43,560 square feet
- Convert to Square Inches
- 1 ac is equal to 6,272,640 square inches

**SI Units**

- Convert to Square Kilometers
- 1 ac is equal to 0.004047 square kilometers
- Convert to Square Meters
- 1 ac is equal to 4,046.86 square meters
- Convert to Square Centimeters
- 1 ac is equal to 40,468,564.2 square centimeters
- Convert to Square Millimeters
- 1 ac is equal to 4,046,856,422.4 square millimeters

**Other Metric Units**

- Convert to Hectares
- 1 ac is equal to 0.404686 hectares
- Convert to Ares
- 1 ac is equal to 40.468564 ares