# Convert Square Inches to Square Kilometers

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

**Results in Square Kilometers:**

## How to Convert Square Inches to Square Kilometers

To convert a square inch measurement to a square kilometer measurement, multiply the area by the conversion ratio. One square inch is equal to 6.4516E-10 square kilometers, so use this simple formula to convert:

The area in square kilometers is equal to the square inches multiplied by 6.4516E-10.

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

Square inches and square kilometers 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.

## Square Kilometers

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

The square kilometer, or square kilometre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "kilo" is the prefix for 10^{3}. A square kilometer is sometimes also referred to as a square km. Square kilometers can be abbreviated as *sq km*, and are also sometimes abbreviated as *km²*. For example, 1 square kilometer can be written as 1 sq km or 1 km².

## Square Inch Measurements and Equivalent Square Kilometer Conversions

Square Inches | Square Kilometers |
---|---|

1 sq in | 0.00000000064516 sq km |

2 sq in | 0.0000000012903 sq km |

3 sq in | 0.0000000019355 sq km |

4 sq in | 0.0000000025806 sq km |

5 sq in | 0.0000000032258 sq km |

6 sq in | 0.000000003871 sq km |

7 sq in | 0.0000000045161 sq km |

8 sq in | 0.0000000051613 sq km |

9 sq in | 0.0000000058064 sq km |

10 sq in | 0.0000000064516 sq km |

11 sq in | 0.0000000070968 sq km |

12 sq in | 0.0000000077419 sq km |

13 sq in | 0.0000000083871 sq km |

14 sq in | 0.0000000090322 sq km |

15 sq in | 0.0000000096774 sq km |

16 sq in | 0.000000010323 sq km |

17 sq in | 0.000000010968 sq km |

18 sq in | 0.000000011613 sq km |

19 sq in | 0.000000012258 sq km |

20 sq in | 0.000000012903 sq km |

21 sq in | 0.000000013548 sq km |

22 sq in | 0.000000014194 sq km |

23 sq in | 0.000000014839 sq km |

24 sq in | 0.000000015484 sq km |

25 sq in | 0.000000016129 sq km |

26 sq in | 0.000000016774 sq km |

27 sq in | 0.000000017419 sq km |

28 sq in | 0.000000018064 sq km |

29 sq in | 0.00000001871 sq km |

30 sq in | 0.000000019355 sq km |

31 sq in | 0.00000002 sq km |

32 sq in | 0.000000020645 sq km |

33 sq in | 0.00000002129 sq km |

34 sq in | 0.000000021935 sq km |

35 sq in | 0.000000022581 sq km |

36 sq in | 0.000000023226 sq km |

37 sq in | 0.000000023871 sq km |

38 sq in | 0.000000024516 sq km |

39 sq in | 0.000000025161 sq km |

40 sq in | 0.000000025806 sq km |

## More Square Inch Area Conversions

**US Customary**

- Convert to Square Miles
- 1 sq in is equal to 2.491E-10 square miles
- Convert to Acres
- 1 sq in is equal to 1.5942E-7 acres
- 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 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