**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 morgen [South Africa]

are to acre [Ireland]

are to square micron

are to square city block [East U.S.]

are to square femtometre

are to square parsec

are to square megametre

are to square exametre

are to square picometre