Kilometers to Astronomical Units

1 km = 6.68459E-9 au

How to convert kilometers to astronomical units

au = km × 6.68459E-9

Example: 5 km = 3.34229E-8 au

Kilometers to Astronomical Units conversion table

Kilometers (km)Astronomical Units (au)
1 km6.68459E-9 au
2 km1.33692E-8 au
3 km2.00538E-8 au
4 km2.67383E-8 au
5 km3.34229E-8 au
6 km4.01075E-8 au
7 km4.67921E-8 au
8 km5.34767E-8 au
9 km6.01613E-8 au
10 km6.68459E-8 au
15 km1.00269E-7 au
20 km1.33692E-7 au
25 km1.67115E-7 au
30 km2.00538E-7 au
40 km2.67383E-7 au
50 km3.34229E-7 au
75 km5.01344E-7 au
100 km6.68459E-7 au
250 km0.000001671147 au
500 km0.000003342294 au
1,000 km0.000006684587 au

About the units

Kilometers: The kilometer is a metric unit of length equal to 1,000 meters.

Astronomical Units: The astronomical unit is defined as exactly 149,597,870,700 meters, roughly the average distance from Earth to the Sun.

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Frequently asked questions

How many astronomical units are in 1 kilometer?

1 kilometer equals 6.68459E-9 astronomical units.

How many kilometers are in 1 astronomical unit?

1 astronomical unit equals 149,597,900 kilometers.

How do I convert kilometers to astronomical units?

Use the formula au = km × 6.68459E-9.

What is 10 kilometers in astronomical units?

10 kilometers equals 6.68459E-8 astronomical units.

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