How many square astronomical unit in 1 square kilometer?
The answer is 4.4683704831421E-17.

We assume you are converting between **square astronomical unit** and **square kilometre**.

You can view more details on each measurement unit:

square astronomical unit or
square kilometer

The SI derived unit for **area** is the square meter.

1 square meter is equal to 4.4683704831421E-23 square astronomical unit, or 1.0E-6 square kilometer.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between square astronomical units and square kilometers.

Type in your own numbers in the form to convert the units!

1 square astronomical unit to square kilometer = 2.2379523E+16 square kilometer

2 square astronomical unit to square kilometer = 4.4759046E+16 square kilometer

3 square astronomical unit to square kilometer = 6.7138569E+16 square kilometer

4 square astronomical unit to square kilometer = 8.9518092E+16 square kilometer

5 square astronomical unit to square kilometer = 1.11897615E+17 square kilometer

6 square astronomical unit to square kilometer = 1.34277138E+17 square kilometer

7 square astronomical unit to square kilometer = 1.56656661E+17 square kilometer

8 square astronomical unit to square kilometer = 1.79036184E+17 square kilometer

9 square astronomical unit to square kilometer = 2.01415707E+17 square kilometer

10 square astronomical unit to square kilometer = 2.2379523E+17 square kilometer

You can do the reverse unit conversion from square kilometer to square astronomical unit, or enter any two units below:

square astronomical unit to joch

square astronomical unit to cong

square astronomical unit to square attometer

square astronomical unit to centiare

square astronomical unit to cawney

square astronomical unit to pyeong

square astronomical unit to cover

square astronomical unit to square micromicron

square astronomical unit to square city block

square astronomical unit to square cubit

A square astronomical unit is defined as the area of a square with sides one astronomical unit in length.

The definition of a astronomical unit is as follows:

The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length. It is approximately equal to the mean distance between the Earth and Sun. The currently accepted value of the AU is 149 597 870 691 ± 30 metres (about 150 million kilometres or 93 million miles).

The symbol "ua" is recommended by the Bureau International des Poids et Mesures, but in the United States and other anglophone countries the reverse usage is more common. The International Astronomical Union recommends "au" and international standard ISO 31-1 uses "AU".

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