Square Centimeters to Square Millimeters Converter

Enter the area in square centimeters below to get the value converted to square millimeters.

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1 sq cm = 100 sq mm

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How to Convert Square Centimeters to Square Millimeters

To convert a measurement in square centimeters to a measurement in square millimeters, multiply the area by the following conversion ratio: 100 square millimeters/square centimeter.

Since one square centimeter is equal to 100 square millimeters, you can use this simple formula to convert:

square millimeters = square centimeters × 100

The area in square millimeters is equal to the area in square centimeters multiplied by 100.

For example, here's how to convert 5 square centimeters to square millimeters using the formula above.
square millimeters = (5 sq cm × 100) = 500 sq mm

How Many Square Millimeters Are in a Square Centimeter?

There are 100 square millimeters in a square centimeter, which is why we use this value in the formula above.

1 sq cm = 100 sq mm

Square centimeters and square millimeters are both units used to measure area. Keep reading to learn more about each unit of measure.

What Is a Square Centimeter?

One square centimeter is equivalent to the area of a square with 1 centimeter long sides. One square centimeter is equal to 0.155 square inches or 1/10,000 of a square meter.

The square centimeter, or square centimetre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "centi" is the prefix for hundredths, or 10-2. A square centimeter is sometimes also referred to as a square cm. Square centimeters can be abbreviated as sq cm, and are also sometimes abbreviated as cm². For example, 1 square centimeter can be written as 1 sq cm or 1 cm².

Learn more about square centimeters.

What Is a Square Millimeter?

One square millimeter is equivalent to the area of a square with edges that are each 1 millimeter in length. One square millimeter is equal to 0.00155 square inches or 1/100 of a square centimeter.

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.

Square Centimeter to Square Millimeter Conversion Table

Table showing various square centimeter measurements converted to square millimeters.
Square Centimeters Square Millimeters
0.1 sq cm 10 sq mm
0.2 sq cm 20 sq mm
0.3 sq cm 30 sq mm
0.4 sq cm 40 sq mm
0.5 sq cm 50 sq mm
0.6 sq cm 60 sq mm
0.7 sq cm 70 sq mm
0.8 sq cm 80 sq mm
0.9 sq cm 90 sq mm
1 sq cm 100 sq mm

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