# Square Millimeters to Square Inches Converter

Select conversion type:

Rounding options:

Convert Square Inches to Square Millimeters (sq in to sq mm) ▶

## Conversion Table

 square millimeters to square inches sq mm sq in 100 sq mm 0.155 sq in 200 sq mm 0.31 sq in 300 sq mm 0.465 sq in 400 sq mm 0.62 sq in 500 sq mm 0.775 sq in 600 sq mm 0.93 sq in 700 sq mm 1.085 sq in 800 sq mm 1.24 sq in 900 sq mm 1.395 sq in 1000 sq mm 1.55 sq in 1100 sq mm 1.705 sq in 1200 sq mm 1.86 sq in 1300 sq mm 2.015 sq in 1400 sq mm 2.17 sq in 1500 sq mm 2.325 sq in 1600 sq mm 2.48 sq in 1700 sq mm 2.635 sq in 1800 sq mm 2.79 sq in 1900 sq mm 2.945 sq in 2000 sq mm 3.1 sq in

## How to convert

1 square millimeter (sq mm) = 0.001550003 square inch (sq in). Square Millimeter (sq mm) is a unit of Area used in Metric system. Square Inch (sq in) is a unit of Area used in Standard system.

## Square Millimeter: A Unit of Area

A square millimeter is a unit of area in the metric system. It is equal to the area of a square with sides that measure 1 millimeter. The symbol for square millimeter is mm2.

## How to Convert Square Millimeter to Other Units

To convert a square millimeter to other units of area, we can use the following conversion factors:

• 1 square millimeter = 0.000001 square meter
• 1 square millimeter = 0.01 square centimeter
• 1 square millimeter = 0.000000001 square kilometer
• 1 square millimeter = 0.00155 square inch
• 1 square millimeter = 0.00001076 square foot
• 1 square millimeter = 0.0000001196 square yard

To convert from other units to a square millimeter, we can use the inverse of these conversion factors.

For example, to convert 50 square centimeters to square millimeters, we can use:

50 square centimeters x (100 mm2 / 1 cm2) = 5000 mm2

## Square Inch: A Unit of Area

A square inch is a unit of area measurement of a space. It is equal to the area of a square with sides of one inch in length. The symbol for square inch is in2.

## How to Convert Square Inch to Other Units

To convert a square inch to other units of area, we can use the following conversion factors:

• 1 square inch = 0.00064516 square meter
• 1 square inch = 6.4516 square centimeter
• 1 square inch = 0.00000003937 square mile
• 1 square inch = 0.00001076 square foot
• 1 square inch = 0.0001196 square yard
• 1 square inch = 645.16 square micrometer

To convert from other units to a square inch, we can use the inverse of these conversion factors.

For example, to convert 50 square centimeters to square inches, we can use:

50 square centimeters x (0.155000310 in2 / 1 cm2) = 7.7500155 in2

Square inches also can be marked as in2.

Español     Russian     Français