"Millimeter" is a unit of length, and "square meter" is a unit of area. So you can't compare.
If by chance you meant "How many square millimeters make 1 square meter?" then here it is.
1 m2 is an area of a 1m * 1m square.
1m * 1m = 1000mm * 1000mm
1000mm * 1000mm = 1,000,000mm2.
Hope it helped :)
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You can't convert that.
3.3 feet
10*10 = 100 of them.
60 blocks make a metre square
That doesn't make sense. Square meter is 2D. Cubic meter is 3D. To attempt to answer your question... A square meter is one meter long and one meter wide. A cubic meter is one meter long, one meter wide, and one meter tall.