Convert 1 kilometer to astronomical unit

1 km (kilometer) is equal to 0.0000000066845871240556065 AU (astronomical unit). To convert from kilometer to astronomical unit, multiply by 0.000000006684587124055607 or divide by 149,597,870.66000417.

• 1 km × 6.6845871240556E-9 = 6.6845871240556E-9 AU
• 1 km ÷ 149597870.66 = 6.6845871240556E-9 AU