Square Millimeters to Square Inches Converter
Enter the area in square millimeters below to get the value converted to square inches.
Do you want to convert square inches to square millimeters?
How to Convert Square Millimeters to Square Inches
To convert a measurement in square millimeters to a measurement in square inches, multiply the area by the following conversion ratio: 0.00155 square inches/square millimeter.
Since one square millimeter is equal to 0.00155 square inches, you can use this simple formula to convert:
square inches = square millimeters × 0.00155
The area in square inches is equal to the area in square millimeters multiplied by 0.00155.
Square millimeters and square inches are both units used to measure area. Keep reading to learn more about each unit of measure.
What Is a Square Millimeter?
The square millimeter, or square millimetre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "milli" is the prefix for thousandths, or 10-3. A square millimeter is sometimes also referred to as a square mm. Square millimeters can be abbreviated as sq mm, and are also sometimes abbreviated as mm². For example, 1 square millimeter can be written as 1 sq mm or 1 mm².
Learn more about square millimeters.
What Is a Square Inch?
The square inch is a US customary and imperial unit of area. A square inch is sometimes also referred to as a square in. Square inches can be abbreviated as sq in, and are also sometimes abbreviated as in². For example, 1 square inch can be written as 1 sq in or 1 in².
Learn more about square inches.
Square Millimeter to Square Inch Conversion Table
|Square Millimeters||Square Inches|
|1 sq mm||0.00155 sq in|
|2 sq mm||0.0031 sq in|
|3 sq mm||0.00465 sq in|
|4 sq mm||0.0062 sq in|
|5 sq mm||0.00775 sq in|
|6 sq mm||0.0093 sq in|
|7 sq mm||0.01085 sq in|
|8 sq mm||0.0124 sq in|
|9 sq mm||0.01395 sq in|
|10 sq mm||0.0155 sq in|
|20 sq mm||0.031 sq in|
|30 sq mm||0.0465 sq in|
|40 sq mm||0.062 sq in|
|50 sq mm||0.0775 sq in|
|60 sq mm||0.093 sq in|
|70 sq mm||0.1085 sq in|
|80 sq mm||0.124 sq in|
|90 sq mm||0.1395 sq in|
|100 sq mm||0.155 sq in|
|200 sq mm||0.310001 sq in|
|300 sq mm||0.465001 sq in|
|400 sq mm||0.620001 sq in|
|500 sq mm||0.775002 sq in|
|600 sq mm||0.930002 sq in|
|700 sq mm||1.085 sq in|
|800 sq mm||1.24 sq in|
|900 sq mm||1.395 sq in|
|1,000 sq mm||1.55 sq in|