How many sq mm in 1 sq in? The answer is 645.16. We assume you are converting between square millimetre and square inch. You can view more details on each measurement unit: sq mm or sq in The SI derived unit for area is the square meter. 1 square meter is equal to 1000000 sq mm, or 1550.0031000062 sq in. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between square millimeters and square inches. Type in your own numbers in the form to convert the units!
1 sq mm to sq in = 0.00155 sq in
10 sq mm to sq in = 0.0155 sq in
50 sq mm to sq in = 0.0775 sq in
100 sq mm to sq in = 0.155 sq in
200 sq mm to sq in = 0.31 sq in
500 sq mm to sq in = 0.775 sq in
1000 sq mm to sq in = 1.55 sq in
You can do the reverse unit conversion from sq in to sq mm, or enter any two units below:
A square inch is by definition the area enclosed by a square with sides each 1 inch long.
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!