**Full name:** square kilometre

**Plural form:** square kilometers

**Symbol:** km^{2}

**Alternate spelling:** square kilometres

**Category type:** area

**Scale factor:** 1000000

The SI derived unit for area is the square meter.

1 square meter is equal to 1.0E-6 sq.km.

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

You can use this form to select from known units:

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