Square Millimeters to Square Centimeters
Convert square millimeters (mm²) to square centimeters (cm²). Type in either box; the other updates as you go.
How to convert square millimeters to square centimeters
To convert square millimeters to square centimeters, multiply the number of square millimeters by 0.01.
Example
Convert 5 square millimeters to square centimeters:
Square Millimeter to square centimeter conversion chart
| Square Millimeters (mm²) | Square Centimeters (cm²) |
|---|---|
| 1 mm² | 0.01 cm² |
| 2 mm² | 0.02 cm² |
| 3 mm² | 0.03 cm² |
| 4 mm² | 0.04 cm² |
| 5 mm² | 0.05 cm² |
| 6 mm² | 0.06 cm² |
| 7 mm² | 0.07 cm² |
| 8 mm² | 0.08 cm² |
| 9 mm² | 0.09 cm² |
| 10 mm² | 0.1 cm² |
| 12 mm² | 0.12 cm² |
| 15 mm² | 0.15 cm² |
| 20 mm² | 0.2 cm² |
| 25 mm² | 0.25 cm² |
| 30 mm² | 0.3 cm² |
| 40 mm² | 0.4 cm² |
| 50 mm² | 0.5 cm² |
| 60 mm² | 0.6 cm² |
| 70 mm² | 0.7 cm² |
| 75 mm² | 0.75 cm² |
| 80 mm² | 0.8 cm² |
| 90 mm² | 0.9 cm² |
| 100 mm² | 1 cm² |
| 150 mm² | 1.5 cm² |
| 200 mm² | 2 cm² |
| 250 mm² | 2.5 cm² |
| 500 mm² | 5 cm² |
| 1,000 mm² | 10 cm² |
Going the other way? See the square centimeters to square millimeters chart.
About the units
Square Millimeter (mm²)
A square millimeter is one millionth of a square meter. Wire cross-sections are often given in square millimeters.
Square Centimeter (cm²)
A square centimeter is the area of a square 1 cm on each side, one ten-thousandth of a square meter.
Frequently asked questions
How many square centimeters are in a square millimeter?
There are 0.01 square centimeters in a square millimeter.
How many square millimeters are in a square centimeter?
There are 100 square millimeters in a square centimeter.
How do you convert square millimeters to square centimeters?
To convert square millimeters to square centimeters, multiply the number of square millimeters by 0.01.
What is 5 square millimeters in square centimeters?
5 square millimeters equals 0.05 square centimeters.
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