mm² to cm²
39 unitsResult1.000000e-2
0.01cm²
1 mm² × 0.01 = 0.01 cm²
Convert Square millimeter to Square centimeter (mm² to cm²)
1 square millimeter = 0.01 square centimeters. Convert square millimeters to square centimeters instantly, with the exact factor, the formula and a reference table of common values.
Formula
square centimeters = square millimeters × 0.01
mm² to cm² conversion table
| mm² | cm² |
|---|---|
| 1 mm² | 0.01 cm² |
| 2 mm² | 0.02 cm² |
| 3 mm² | 0.03 cm² |
| 5 mm² | 0.05 cm² |
| 10 mm² | 0.1 cm² |
| 20 mm² | 0.2 cm² |
| 50 mm² | 0.5 cm² |
| 100 mm² | 1 cm² |
| 250 mm² | 2.5 cm² |
| 500 mm² | 5 cm² |
| 1000 mm² | 10 cm² |
What is a square millimeter?
A square millimeter is a tiny square one millimeter on each side; a million of them make one square meter. It is about the size of a pinhead.
Engineers and machinists use it for wire cross-sections, small components and tolerances, and biologists use it under the microscope.
In writing, the square millimeter is usually shortened to "mm²". One square millimeter is 0.000001 square meters, and that ratio is what every number on this page is built from.