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Convert square feet to square mm, square mm to square feet

Convert ft2 to mm2

ft2
mm2

Convert mm2 to ft2

mm2
ft2

How to convert ft2 to mm2 : Use the conversion calculator titled "Convert ft2 to mm2". Enter a value in the ft2 field and click on the "Calculate square mm" button. Your answer will appear in the mm2 field.

How to convert mm2 to ft2 : Use the conversion calculator titled "Convert mm2 to ft2". Enter a value in the mm2 field and click on the "Calculate square feet" button. Your answer will appear in the ft2 field.

Conversion Definitions

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

What is a square foot (ft2)?

A square foot is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square foot is ft2 or sq ft. There are 144 square inches in a square foot. A square foot is calculated as the area of a square that has 1 foot on each side.

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.

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/Imperial System  
square feet ft2 or sq ft US Customary Units/Imperial System 1 ft2 = 144 in2
square yards yd2 or sq yd US Customary Units/Imperial System 1 yd2 = 9 ft2
acres ac US Customary Units/Imperial System 1 ac = 4,840 yd2
square miles mi2 or sq mi US Customary Units/Imperial System 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