**Full name:** are

**Plural form:** ares

**Symbol:** a

**Category type:** area

**Scale factor:** 100

The SI derived unit for area is the square meter.

1 square meter is equal to 0.01 are.

Valid units must be of the **area** type.

You can use this form to select from known units:

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An are or (symbol a) is a unit of surface area, equivalent to 100 square metres. The are is most familiar through its derived unit, the hectare. Neither the are nor the hectare are SI units, although they are both accepted for use with SI units.

are to square chain [Gunter, survey]

are to square terametre

are to jerib

are to square furlong

are to centiare

are to perche [Canada]

are to square yard

are to square parsec

are to square millimetre