# Area

Area is the amount of space covered by a two-dimensional figure in a plane.

## Units of area

The area covered by a shape can be calculated from its 1-dimensional parameters, such as length and width.

The International System of Units (SI), imperial units, and U.S. customary units are the major unit systems used in different parts of the world. The following is a list of some of the popular units of area in different systems.

**The International System of Units (SI):** square meter, square centimeter, hectare, square kilometer.

**The imperial units and the U.S. customary units:** square inch, square foot, square mile, acre.