cm2 to mm2 Converter - Square Centimeter to Square Millimeter

Conversion derivation

Express both cm2 and mm2 in the same base unit m2 (square meter), then cancel the shared base unit.

1. 1

   Rewrite cm2 in the base unit

   $$1cm2=0.0001m2$$
2. 2

   Rewrite mm2 in the base unit

   $$1mm2=0.000001m2$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1cm2& =\frac{0.0001\cancel{m2}}{0.000001\cancel{m2}}\times 1mm2\\ & =\frac{0.0001}{0.000001}mm2\\ & =100mm2\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1mm2& =\frac{0.000001\cancel{m2}}{0.0001\cancel{m2}}\times 1cm2\\ & =\frac{0.000001}{0.0001}cm2\\ & =0.01cm2\end{array}$$