# Convert Square Millimeters to Square Kilometers

Enter your square millimeter value in the form below to get the value calculated in square kilometers.

**Results in Square Kilometers:**

## How to Convert Square Millimeters to Square Kilometers

Convert square millimeters to square kilometers with this simple formula:

Converting a square millimeter area measurement to a square kilometer measurement involves multiplying the area by the conversion ratio to find the result. One square millimeter is equal to 1.0E-12 square kilometers, so to convert simply multiply by 1.0E-12.

**For example:**

Learn more about finding the area of your space using our area calculator.

Square millimeters and square kilometers are both units used to measure area.
Learn more about area and
find more area measurement conversion calculators.
Square millimeters are a metric measurement and can be abbreviated as *sq mm*, for example 1 sq mm.
Square kilometers are a metric measurement and can be abbreviated as *sq km*, for example 1 sq km.
Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

## Square Millimeter Measurements and Equivalent Square Kilometer Conversions

Square Millimeters | Square Kilometers |
---|---|

1 sq mm | 0.000000000001 sq km |

2 sq mm | 0.000000000002 sq km |

3 sq mm | 0.000000000003 sq km |

4 sq mm | 0.000000000004 sq km |

5 sq mm | 0.000000000005 sq km |

6 sq mm | 0.000000000006 sq km |

7 sq mm | 0.000000000007 sq km |

8 sq mm | 0.000000000008 sq km |

9 sq mm | 0.000000000009 sq km |

10 sq mm | 0.00000000001 sq km |

11 sq mm | 0.000000000011 sq km |

12 sq mm | 0.000000000012 sq km |

13 sq mm | 0.000000000013 sq km |

14 sq mm | 0.000000000014 sq km |

15 sq mm | 0.000000000015 sq km |

16 sq mm | 0.000000000016 sq km |

17 sq mm | 0.000000000017 sq km |

18 sq mm | 0.000000000018 sq km |

19 sq mm | 0.000000000019 sq km |

20 sq mm | 0.00000000002 sq km |

21 sq mm | 0.000000000021 sq km |

22 sq mm | 0.000000000022 sq km |

23 sq mm | 0.000000000023 sq km |

24 sq mm | 0.000000000024 sq km |

25 sq mm | 0.000000000025 sq km |

26 sq mm | 0.000000000026 sq km |

27 sq mm | 0.000000000027 sq km |

28 sq mm | 0.000000000028 sq km |

29 sq mm | 0.000000000029 sq km |

30 sq mm | 0.00000000003 sq km |

31 sq mm | 0.000000000031 sq km |

32 sq mm | 0.000000000032 sq km |

33 sq mm | 0.000000000033 sq km |

34 sq mm | 0.000000000034 sq km |

35 sq mm | 0.000000000035 sq km |

36 sq mm | 0.000000000036 sq km |

37 sq mm | 0.000000000037 sq km |

38 sq mm | 0.000000000038 sq km |

39 sq mm | 0.000000000039 sq km |

40 sq mm | 0.00000000004 sq km |

## More Square Millimeter Area Conversions

**US Customary**

- Convert to Square Miles
- 1 sq mm is equal to 3.861E-13 square miles
- Convert to Acres
- 1 sq mm is equal to 2.4711E-10 acres
- Convert to Square Yards
- 1 sq mm is equal to 1.196E-6 square yards
- Convert to Square Feet
- 1 sq mm is equal to 1.0764E-5 square feet
- Convert to Square Inches
- 1 sq mm is equal to 0.00155 square inches

**SI Units**

- Convert to Square Meters
- 1 sq mm is equal to 1.0E-6 square meters
- Convert to Square Centimeters
- 1 sq mm is equal to 0.01 square centimeters

**Are Units**

- Convert to Hectares
- 1 sq mm is equal to 1.0E-10 hectares
- Convert to Ares
- 1 sq mm is equal to 1.0E-8 ares