# Convert square mm to square m, square m to square mm - Area Conversion

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
- square m to square mm

## Conversion Calculators

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

**convert m**.

^{2}to mm^{2}## Convert mm^{2} to m^{2}

## Convert m^{2} to mm^{2}

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

^{2}to m

^{2}". Enter a value in the mm

^{2}field and click on the "Calculate square m" button. Your answer will appear in the m

^{2}field.

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

^{2}to mm

^{2}". Enter a value in the m

^{2}field and click on the "Calculate square mm. Your answer will appear in the mm

^{2}field.

## Conversion Definitions

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

### What is a square millimeter (mm^{2})?

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.

### What is a square meter (m^{2})?

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.

### Understanding the Area Units

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 |