Use these **online** calculators to convert between square millimeters (mm^{2}) and square meters (m^{2}). These Area conversion calculators provide a quick and easy way to convert square mm to square m, or square m to square mm.

Enter your value in one of the conversion calculators below to **convert mm ^{2} to m^{2}** or

**How to convert mm ^{2} to m^{2}**: Use the conversion calculator titled "Convert mm

**How to convert m ^{2} to mm^{2}**: Use the conversion calculator titled "Convert m

Both square millimeters (mm^{2}) and square meters (m^{2}) are units of area in the Metric System. So when you convert between these units, you are performing a conversion between units within the Metric System.

Let's take a closer look at the conversion formulas so that you can do these conversions yourself either with a calculator or with an old-fashioned pencil and paper.

The formula to convert from mm^{2} to m^{2} is:

m^{2}= mm^{2}x 0.000001

The formula to convert from m^{2} to mm^{2} is:

mm^{2}= m^{2}x 1,000,000

Next, let's look at some examples showing the work and calculations that are involved in converting between square millimeters (mm^{2}) and square meters (m^{2}).

Task: Convert 40,000 square millimeters to square meters (show work)Formula:mm^{2}x 0.000001 = m^{2}Calculations:40,000 mm^{2}x 0.000001 = 0.04 m^{2}Result:40,000 mm^{2}is equal to 0.04 m^{2}

Task: Convert 16 square meters to square millimeters (show work)Formula:m^{2}x 1,000,000 = mm^{2}Calculations:16 m^{2}x 1,000,000 = 16,000,000 mm^{2}Result:16 m^{2}is equal to 16,000,000 mm^{2}

For quick reference purposes, below are conversion tables that you can use to convert from mm^{2} to m^{2}, and m^{2} to mm^{2}.

square millimeters (mm^{2}) |
square meters (m^{2}) |
---|---|

1 mm^{2} |
0.000001 m^{2} |

4 mm^{2} |
0.000004 m^{2} |

9 mm^{2} |
0.000009 m^{2} |

16 mm^{2} |
0.000016 m^{2} |

25 mm^{2} |
0.000025 m^{2} |

36 mm^{2} |
0.000036 m^{2} |

49 mm^{2} |
0.000049 m^{2} |

64 mm^{2} |
0.000064 m^{2} |

81 mm^{2} |
0.000081 m^{2} |

100 mm^{2} |
0.0001 m^{2} |

144 mm^{2} |
0.000144 m^{2} |

169 mm^{2} |
0.000169 m^{2} |

196 mm^{2} |
0.000196 m^{2} |

225 mm^{2} |
0.000225 m^{2} |

256 mm^{2} |
0.000256 m^{2} |

289 mm^{2} |
0.000289 m^{2} |

square meters (m^{2}) |
square millimeters (mm^{2}) |
---|---|

1 m^{2} |
1,000,000 mm^{2} |

4 m^{2} |
4,000,000 mm^{2} |

9 m^{2} |
9,000,000 mm^{2} |

16 m^{2} |
16,000,000 mm^{2} |

25 m^{2} |
25,000,000 mm^{2} |

36 m^{2} |
36,000,000 mm^{2} |

49 m^{2} |
49,000,000 mm^{2} |

64 m^{2} |
64,000,000 mm^{2} |

81 m^{2} |
81,000,000 mm^{2} |

100 m^{2} |
100,000,000 mm^{2} |

144 m^{2} |
144,000,000 mm^{2} |

169 m^{2} |
169,000,000 mm^{2} |

196 m^{2} |
196,000,000 mm^{2} |

225 m^{2} |
225,000,000 mm^{2} |

256 m^{2} |
256,000,000 mm^{2} |

289 m^{2} |
289,000,000 mm^{2} |

The following is a list of definitions relating to conversions between square millimeters and square meters.

A square milliimeter is a unit of area in the Metric System. The symbol for square millimeter is mm^{2}. There are 1,000,000 square millimeters in a square meter. A square millimeter is calculated as the area of a square that has 1 millimeter on each side. The International spelling is square millimetre.

A square meter is a unit of area in the Metric System. The symbol for square meter is m^{2}. There are 10,000 square meters in a hectare, or 1,000,000 square meters in a square kilometer. A square meter is calculated as the area of a square that has 1 meter on each side. The International spelling is square metre.

This table provides a summary of the Area units within their respective measurement systems.

Unit | Symbol | Measurement System | Description |
---|---|---|---|

square inches | in^{2} or sq in |
US Customary Units (and Imperial) | |

square feet | ft^{2} or sq ft |
US Customary Units (and Imperial) | 1 ft^{2} = 144 in^{2} |

square yards | yd^{2} or sq yd |
US Customary Units (and Imperial) | 1 yd^{2} = 9 ft^{2} |

acres | ac | US Customary Units (and Imperial) | 1 ac = 4,840 yd^{2} |

square miles | mi^{2} or sq mi |
US Customary Units (and Imperial) | 1 mi^{2} = 640 ac |

square millimeters | mm^{2} |
Metric System | |

square centimeters | cm^{2} |
Metric System | 1 cm^{2} = 100 mm^{2} |

square decimeters | dm^{2} |
Metric System | 1 dm^{2} = 100 cm^{2} |

square meters | m^{2} |
Metric System | 1 m^{2} = 100 dm^{2} |

hectares | ha | Metric System | 1 ha = 10,000 m^{2} |

square kilometer | km^{2} |
Metric System | 1 km^{2} = 100 ha |