Converting from Square inch (in²) to Square millimeter (mm²) in Area

What is Square inch (in²)

Square inch (in²) is a unit of area commonly used in the United States and other countries. It is equal to the area of a square with sides measuring one inch.

What is Square millimeter (mm²)

Square millimeter (mm²) is a smaller unit of area commonly used in the metric system. It is equal to the area of a square with sides measuring one millimeter.

Conversion Formulas

To convert from square inch to square millimeter, you can use the following formula:

Square millimeter (mm2)=Square inch (in2)×645.16

To convert from square millimeter to square inch, you can use the following formula:

Square inch (in2)=Square millimeter (mm2)×0.001550003

Examples

1. Converting 10 square inches to square millimeters:

10 in2=10×645.16=6451.6 mm2

2. Converting 3 square millimeters to square inches:

3 mm2=3×0.001550003=0.004650009 in2

3. Converting 14 square inches to square millimeters:

14 in2=14×645.16=9032.24 mm2

Use this page to perform converting from Square inch (in²) to Square millimeter (mm²) with ease.