# Square kilometer conversions

area conversions » square kilometer conversionsThe online converter calculator on this page allows you to select the area/surface measurement unit you want to convert to starting from square kilometers (sq km). To make a conversion starting from a unit of area other than square kilometer, simply click on the "Reset" button.

## What is square kilometer?

### Definition:

The square kilometre is a unit of area in the metric system equal to 1,000,000 square meters (1 km2 = 1,000,000 m2), the standard derived unit of area in the International System of Units (SI). It is also equal to 100 hectares (ha) (a unit of area in the metric system), or 10,000 square decameters (dam2) or 100 hectometers (hm2) (units of area in the SI), or 247.105381 acres (ac), or 1.07639104x107 square feet (sq ft), or 1.19599005x106 square yards (sq yd) or 0.386102159 square miles (sq mi), which are Imperial / US customary units of area.

The square kilometer (km2) is an SI derived unit of area. The kilometer (km) is a unit of length in the SI. An area of 1.0 square kilometer is the area of a square that is 1.0 kilometer on each side.

### Symbol:

sq km

### Plural:

square kilometers

### Also known as:

square kilometer (plural: square kilometers, US spelling)

Below you can find a comprehensive list with conversions from square kilometers to other (metric, imperial, or customary) area and surface measurement units.