# Square Kilometers Conversion

The square kilometer is a unit used to measure area. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about square kilometers.

## Square Kilometer Conversion Calculators

Choose a unit of area to convert to.

**US Customary**

- Convert square kilometers to square miles
- 1 square kilometer is equal to 0.386102 square miles
- Convert square kilometers to acres
- 1 square kilometer is equal to 247.105381 acres
- Convert square kilometers to square yards
- 1 square kilometer is equal to 1,195,990 square yards
- Convert square kilometers to square feet
- 1 square kilometer is equal to 10,763,910 square feet
- Convert square kilometers to square inches
- 1 square kilometer is equal to 1,550,003,100 square inches

**SI Units**

- Convert square kilometers to square meters
- 1 square kilometer is equal to 1,000,000 square meters
- Convert square kilometers to square centimeters
- 1 square kilometer is equal to 10,000,000,000 square centimeters
- Convert square kilometers to square millimeters
- 1 square kilometer is equal to 1,000,000,000,000 square millimeters

**Other Metric Units**

- Convert square kilometers to hectares
- 1 square kilometer is equal to 100 hectares
- Convert square kilometers to ares
- 1 square kilometer is equal to 10,000 ares

## Square Kilometer Definition and Usage

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.

You might also be interested in our area calculator.

## Square Kilometers Measurement Conversion Table

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

1 sq km | 0.386102 sq mi | 247.105381 ac | 1,195,990 sq yd | 10,763,910 sq ft | 1,550,003,100 sq in | 1,000,000 sq m | 10,000,000,000 sq cm | 1,000,000,000,000 sq mm | 100 ha | 10,000 a |

2 sq km | 0.772204 sq mi | 494.210763 ac | 2,391,980 sq yd | 21,527,821 sq ft | 3,100,006,200 sq in | 2,000,000 sq m | 20,000,000,000 sq cm | 2,000,000,000,000 sq mm | 200 ha | 20,000 a |

3 sq km | 1.158306 sq mi | 741.316144 ac | 3,587,970 sq yd | 32,291,731 sq ft | 4,650,009,300 sq in | 3,000,000 sq m | 30,000,000,000 sq cm | 3,000,000,000,000 sq mm | 300 ha | 30,000 a |

4 sq km | 1.544409 sq mi | 988.421526 ac | 4,783,960 sq yd | 43,055,642 sq ft | 6,200,012,400 sq in | 4,000,000 sq m | 40,000,000,000 sq cm | 4,000,000,000,000 sq mm | 400 ha | 40,000 a |

5 sq km | 1.930511 sq mi | 1,236 ac | 5,979,950 sq yd | 53,819,552 sq ft | 7,750,015,500 sq in | 5,000,000 sq m | 50,000,000,000 sq cm | 5,000,000,000,000 sq mm | 500 ha | 50,000 a |

6 sq km | 2.316613 sq mi | 1,483 ac | 7,175,940 sq yd | 64,583,463 sq ft | 9,300,018,600 sq in | 6,000,000 sq m | 60,000,000,000 sq cm | 6,000,000,000,000 sq mm | 600 ha | 60,000 a |

7 sq km | 2.702715 sq mi | 1,730 ac | 8,371,930 sq yd | 75,347,373 sq ft | 10,850,021,700 sq in | 7,000,000 sq m | 70,000,000,000 sq cm | 7,000,000,000,000 sq mm | 700 ha | 70,000 a |

8 sq km | 3.088817 sq mi | 1,977 ac | 9,567,920 sq yd | 86,111,283 sq ft | 12,400,024,800 sq in | 8,000,000 sq m | 80,000,000,000 sq cm | 8,000,000,000,000 sq mm | 800 ha | 80,000 a |

9 sq km | 3.474919 sq mi | 2,224 ac | 10,763,910 sq yd | 96,875,194 sq ft | 13,950,027,900 sq in | 9,000,000 sq m | 90,000,000,000 sq cm | 9,000,000,000,000 sq mm | 900 ha | 90,000 a |

10 sq km | 3.861022 sq mi | 2,471 ac | 11,959,900 sq yd | 107,639,104 sq ft | 15,500,031,000 sq in | 10,000,000 sq m | 100,000,000,000 sq cm | 10,000,000,000,000 sq mm | 1,000 ha | 100,000 a |

11 sq km | 4.247124 sq mi | 2,718 ac | 13,155,891 sq yd | 118,403,015 sq ft | 17,050,034,100 sq in | 11,000,000 sq m | 110,000,000,000 sq cm | 11,000,000,000,000 sq mm | 1,100 ha | 110,000 a |

12 sq km | 4.633226 sq mi | 2,965 ac | 14,351,881 sq yd | 129,166,925 sq ft | 18,600,037,200 sq in | 12,000,000 sq m | 120,000,000,000 sq cm | 12,000,000,000,000 sq mm | 1,200 ha | 120,000 a |

13 sq km | 5.019328 sq mi | 3,212 ac | 15,547,871 sq yd | 139,930,835 sq ft | 20,150,040,300 sq in | 13,000,000 sq m | 130,000,000,000 sq cm | 13,000,000,000,000 sq mm | 1,300 ha | 130,000 a |

14 sq km | 5.40543 sq mi | 3,459 ac | 16,743,861 sq yd | 150,694,746 sq ft | 21,700,043,400 sq in | 14,000,000 sq m | 140,000,000,000 sq cm | 14,000,000,000,000 sq mm | 1,400 ha | 140,000 a |

15 sq km | 5.791532 sq mi | 3,707 ac | 17,939,851 sq yd | 161,458,656 sq ft | 23,250,046,500 sq in | 15,000,000 sq m | 150,000,000,000 sq cm | 15,000,000,000,000 sq mm | 1,500 ha | 150,000 a |

16 sq km | 6.177635 sq mi | 3,954 ac | 19,135,841 sq yd | 172,222,567 sq ft | 24,800,049,600 sq in | 16,000,000 sq m | 160,000,000,000 sq cm | 16,000,000,000,000 sq mm | 1,600 ha | 160,000 a |

17 sq km | 6.563737 sq mi | 4,201 ac | 20,331,831 sq yd | 182,986,477 sq ft | 26,350,052,700 sq in | 17,000,000 sq m | 170,000,000,000 sq cm | 17,000,000,000,000 sq mm | 1,700 ha | 170,000 a |

18 sq km | 6.949839 sq mi | 4,448 ac | 21,527,821 sq yd | 193,750,388 sq ft | 27,900,055,800 sq in | 18,000,000 sq m | 180,000,000,000 sq cm | 18,000,000,000,000 sq mm | 1,800 ha | 180,000 a |

19 sq km | 7.335941 sq mi | 4,695 ac | 22,723,811 sq yd | 204,514,298 sq ft | 29,450,058,900 sq in | 19,000,000 sq m | 190,000,000,000 sq cm | 19,000,000,000,000 sq mm | 1,900 ha | 190,000 a |

20 sq km | 7.722043 sq mi | 4,942 ac | 23,919,801 sq yd | 215,278,208 sq ft | 31,000,062,000 sq in | 20,000,000 sq m | 200,000,000,000 sq cm | 20,000,000,000,000 sq mm | 2,000 ha | 200,000 a |

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