Astronomical unit to kilometers (AU to km) converter

You can enter a value in either the astronomical unit (AU) or kilometers (km) input fields. For an understanding of the conversion process, we include algebraic formulas.

See conversions to common Length units and easily switch Length units in the two tabbed section below. Use the search bar above to find additional conversions.

Tip: Click the "Swap" button to switch from converting astronomical unit to kilometers to kilometers to astronomical unit.

astronomical unit (AU)

 

kilometers (km)

 
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1 AU = 149598073 km 1 km = 1.0E-8 AU

Algebraic Steps / Dimensional Analysis Formula
AU * 5889679948400 in
1 AU		 * 2.54 cm
1 in		 * 1 km
100000 cm		 = km

Direct Conversion Formula
AU * 149598073 km
1 AU		 = km

If you would like to switch between Length units, select from the tables below

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