How do I convert 58 square metre to metres thanks

A metre and a meter, I believe are alternate spellings.

You cannot, for instance convert sq in to in. I hope that's not what your trying to do. Convert meters to square meters because you cannot.

Kiss is right on here. Its depends on what side of the big pond you are on. It's the same measurement just with a different accent in spelling.

I agree, you can not convert a square neasure to e linear measure. Once you figure out what you really meant to say try this Online calculator converting meters or metres to feet inches and fractions of an inch. Convert decimals of a foot or inch to fractions (http://www.simetric.co.uk/metres_to_feet.php)