An area unit is a unit of measurement of the surface area of a two-dimensional object.
Area units are mainly used in interior design and architecture to measure how large a space is.
The conversion of units of area is a common need in construction and manufacturing. It gets trickier when one has to convert areas between imperial and metric systems.
It is important to remember that the conversions may not be linear. An area that is 1,000 square yards will be 9000 square feet. 1 Square yard is equivalent to 0.836 Square meter.