Its impossible but you can covert cm2 to mm2.
You want to convert 1 m² to mm² :
m ² | dm ² | cm ² | mm ² |
.0.1..0.0.....0.0.....0.0...
You get : 1 000 000 mm²
And
1cm² =
m ² | dm ² | cm ² | mm ² |
...................0.1.....0.0...
0100 = 100 mm²
To keep tracking about the ubit conversions, you can use this Unit Converter ,to get more instant results.