M²

m² may mean:Square metre, an SI measure of areaM² may mean:M squared, a measure of laser beam qualityM² (album), by Marcus Millerm² (artist), the ambient project of German electronic musician and DJ Mathis Mootz
See more at Wikipedia.org...

sqm., square meter, unit of area equal to 10 000 square centimeters

= square metre (sq. m.)
Ex: The architect's brief specifies that every square metre that funds will allow should be allocated.