Are
An are (symbol a) is a unit of surface area, equivalent to 100 square metres. The are is most familiar through its derived unit, the hectare.
One are equals 1076.3910 square feet. One hectare is roughly 2.47 acres.
See also 1 E2 mē for a comparison with other areas.
External link
Conversion Calculator for Units of AREA (http://www.ex.ac.uk/cimt/dictunit/ccarea.htm)