cm² to mm²
39 unitsResult1.000000e+2
100mm²
1 cm² × 100 = 100 mm²
Convert Square centimeter to Square millimeter (cm² to mm²)
1 square centimeter = 100 square millimeters. Convert square centimeters to square millimeters instantly, with the exact factor, the formula and a reference table of common values.
Formula
square millimeters = square centimeters × 100
cm² to mm² conversion table
| cm² | mm² |
|---|---|
| 1 cm² | 100 mm² |
| 2 cm² | 200 mm² |
| 3 cm² | 300 mm² |
| 5 cm² | 500 mm² |
| 10 cm² | 1000 mm² |
| 20 cm² | 2000 mm² |
| 50 cm² | 5000 mm² |
| 100 cm² | 10000 mm² |
| 250 cm² | 25000 mm² |
| 500 cm² | 50000 mm² |
| 1000 cm² | 100000 mm² |
What is a square centimeter?
A square centimeter is a square one centimeter on each side — roughly the face of a small button or a fingernail. Ten thousand of them fit into one square meter.
It shows up in medicine for measuring skin areas and wounds, in electronics for chip sizes, and anywhere small surfaces need a precise figure.
In writing, the square centimeter is usually shortened to "cm²". One square centimeter is 0.0001 square meters, and that ratio is what every number on this page is built from.