How to convert square inches to square millimeters?
1 Square inch is equal to 645.16 square millimeters. To convert square inches to square millimeters, multiply the square inch value by 645.16.
For example, to convert 10 sq in to sq mm, multiply 10 by 645.16, that makes 6451.6 sq mm is 10 sq in.
1 Square Inch = 645.16 Square Millimeters
How to convert square millimeters to square inches?
1 Square millimeter is equal to 0.0015500031 square inch. To convert square mm to square inches, multiply the square mm value by 0.0015500031 or divide by 645.16.
1 Square Millimeter = 0.0015500031 Square Inch
What is a Square Inch?
Square inch is an imperial and United States Customary area unit. 1 sq in = 645.16 sq mm. The symbol is "in²".
What is a Square Millimeter?
Square millimeter (millimetre) is a metric system area unit. The symbol is "mm²".
Please visit area conversion to convert all area units.