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Area Conversion: square mm to square m, square m to square mm

Use the online conversion calculators to convert between square millimeters (mm2) and square meters (m2).

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-hand side 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-hand side 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.

Definitions

Below are definitions relating to these conversion formulas:

Unit Symbol Measurement System Description
square inches in2 US Customary Units (and Imperial)  
square feet ft2 US Customary Units (and Imperial) 1 ft2 = 144 in2
square yards yd2 US Customary Units (and Imperial) 1 yd2 = 9 ft2
acres ac US Customary Units (and Imperial) 1 ac = 4,840 yd2
square miles mi2 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