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

Use these online calculators to convert between square millimeters (mm2) and square meters (m2). 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 mm2 to m2 or convert m2 to mm2.

Convert mm2 to m2

Convert m2 to mm2

How to convert mm2 to m2: Use the conversion calculator on the left titled "Convert mm2 to m2". Enter a value in the mm2 field and click on the "Calculate square m" button. Your answer will appear in the m2 field.

How to convert m2 to mm2: Use the conversion calculator on the right titled "Convert m2 to mm2". Enter a value in the m2 field and click on the "Calculate square mm. Your answer will appear in the mm2 field.

Conversion Definitions

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

What is a square millimeter (mm2)?

A square milliimeter is a unit of area in the Metric System. The symbol for square millimeter is mm2. 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 (m2)?

A square meter is a unit of area in the Metric System. The symbol for square meter is m2. 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 in2 or sq in US Customary Units (and Imperial)  
square feet ft2 or sq ft US Customary Units (and Imperial) 1 ft2 = 144 in2
square yards yd2 or sq yd US Customary Units (and Imperial) 1 yd2 = 9 ft2
acres ac US Customary Units (and Imperial) 1 ac = 4,840 yd2
square miles mi2 or sq mi US Customary Units (and Imperial) 1 mi2 = 640 ac
square millimeters mm2 Metric System
square centimeters cm2 Metric System 1 cm2 = 100 mm2
square decimeters dm2 Metric System 1 dm2 = 100 cm2
square meters m2 Metric System 1 m2 = 100 dm2
hectares ha Metric System 1 ha = 10,000 m2
square kilometer km2 Metric System 1 km2 = 100 ha