Square Millimeters to Square Centimeters Converter

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

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1 sq mm = 0.01 sq cm

Do you want to convert square centimeters to square millimeters?

How to Convert Square Millimeters to Square Centimeters

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Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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To convert a measurement in square millimeters to a measurement in square centimeters, divide 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 centimeters = square millimeters ÷ 100

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

For example, here's how to convert 5 square millimeters to square centimeters using the formula above.
square centimeters = (5 sq mm ÷ 100) = 0.05 sq cm

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

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.

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.

Square Millimeter to Square Centimeter Conversion Table

Table showing various square millimeter measurements converted to square centimeters.
Square Millimeters Square Centimeters
1 sq mm 0.01 sq cm
2 sq mm 0.02 sq cm
3 sq mm 0.03 sq cm
4 sq mm 0.04 sq cm
5 sq mm 0.05 sq cm
6 sq mm 0.06 sq cm
7 sq mm 0.07 sq cm
8 sq mm 0.08 sq cm
9 sq mm 0.09 sq cm
10 sq mm 0.1 sq cm

More Square Millimeter & Square Centimeter Conversions