# Convert Square Inches to Acres

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

**Results in Acres:**

## How to Convert Square Inches to Acres

To convert a square inch measurement to an acre measurement, multiply the area by the conversion ratio. One square inch is equal to 1.5942E-7 acres, so use this simple formula to convert:

The area in acres is equal to the square inches multiplied by 1.5942E-7.

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

Square inches and acres are both units used to measure area. Keep reading to learn more about each unit of measure.

## Square Inches

One square inch is equal to the area of a square with sides that are 1 inch in length.

The square inch is a US customary and imperial unit of area. A square inch is sometimes also referred to as a square in. Square inches can be abbreviated as *sq in*, and are also sometimes abbreviated as *in²*. For example, 1 square inch can be written as 1 sq in or 1 in².

## 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 Inch Measurements and Equivalent Acre Conversions

Square Inches | Acres |
---|---|

1 sq in | 0.00000015942 ac |

2 sq in | 0.00000031885 ac |

3 sq in | 0.00000047827 ac |

4 sq in | 0.00000063769 ac |

5 sq in | 0.00000079711 ac |

6 sq in | 0.00000095654 ac |

7 sq in | 0.000001116 ac |

8 sq in | 0.0000012754 ac |

9 sq in | 0.0000014348 ac |

10 sq in | 0.0000015942 ac |

11 sq in | 0.0000017536 ac |

12 sq in | 0.0000019131 ac |

13 sq in | 0.0000020725 ac |

14 sq in | 0.0000022319 ac |

15 sq in | 0.0000023913 ac |

16 sq in | 0.0000025508 ac |

17 sq in | 0.0000027102 ac |

18 sq in | 0.0000028696 ac |

19 sq in | 0.000003029 ac |

20 sq in | 0.0000031885 ac |

21 sq in | 0.0000033479 ac |

22 sq in | 0.0000035073 ac |

23 sq in | 0.0000036667 ac |

24 sq in | 0.0000038261 ac |

25 sq in | 0.0000039856 ac |

26 sq in | 0.000004145 ac |

27 sq in | 0.0000043044 ac |

28 sq in | 0.0000044638 ac |

29 sq in | 0.0000046233 ac |

30 sq in | 0.0000047827 ac |

31 sq in | 0.0000049421 ac |

32 sq in | 0.0000051015 ac |

33 sq in | 0.0000052609 ac |

34 sq in | 0.0000054204 ac |

35 sq in | 0.0000055798 ac |

36 sq in | 0.0000057392 ac |

37 sq in | 0.0000058986 ac |

38 sq in | 0.0000060581 ac |

39 sq in | 0.0000062175 ac |

40 sq in | 0.0000063769 ac |

## More Square Inch Area Conversions

**US Customary**

- Convert to Square Miles
- 1 sq in is equal to 2.491E-10 square miles
- Convert to Square Yards
- 1 sq in is equal to 0.000772 square yards
- Convert to Square Feet
- 1 sq in is equal to 0.006944 square feet

**SI Units**

- Convert to Square Kilometers
- 1 sq in is equal to 6.4516E-10 square kilometers
- Convert to Square Meters
- 1 sq in is equal to 0.000645 square meters
- Convert to Square Centimeters
- 1 sq in is equal to 6.4516 square centimeters
- Convert to Square Millimeters
- 1 sq in is equal to 645.16 square millimeters

**Other Metric Units**

- Convert to Hectares
- 1 sq in is equal to 6.4516E-8 hectares
- Convert to Ares
- 1 sq in is equal to 6.4516E-6 ares