Convert centimeters to astronomical units
1 cm = 0.0000000000000668458712227 au — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
6.68458712227e-14au
As a fraction: 1/14959787070000
1 cm = 0.0000000000000668458712227 au
How to convert centimeters to astronomical units
Multiply the number of centimeters by 0.0000000000000668458712227 to get astronomical units.
Astronomical unit: Fixed at exactly 149 597 870 700 m by the IAU in 2012.
Centimeter to Astronomical unit conversion table
| Centimeters (cm) | Astronomical units (au) |
|---|---|
| 1 cm | 6.6845871e-14 |
| 2 cm | 1.3369174e-13 |
| 3 cm | 2.0053761e-13 |
| 5 cm | 3.3422936e-13 |
| 10 cm | 6.6845871e-13 |
| 20 cm | 1.3369174e-12 |
| 25 cm | 1.6711468e-12 |
| 50 cm | 3.3422936e-12 |
| 100 cm | 6.6845871e-12 |
| 250 cm | 1.6711468e-11 |
| 500 cm | 3.3422936e-11 |
| 1000 cm | 6.6845871e-11 |
Astronomical unit to Centimeter conversion table
| Astronomical units (au) | Centimeters (cm) |
|---|---|
| 1 au | 14 959 787 000 000 |
| 2 au | 29 919 574 000 000 |
| 3 au | 44 879 361 000 000 |
| 5 au | 74 798 935 000 000 |
| 10 au | 149 597 870 000 000 |
| 20 au | 299 195 740 000 000 |
| 25 au | 373 994 680 000 000 |
| 50 au | 747 989 350 000 000 |
| 100 au | 1 495 978 700 000 000 |
| 250 au | 3 739 946 800 000 000 |
| 500 au | 7 479 893 500 000 000 |
| 1000 au | 1.4959787e+16 |
Frequently asked
How many astronomical units are in a centimeter?
One centimeter equals 6.684587122e-14 astronomical units (cm → au). That figure is exact, not rounded.
How do you convert centimeters to astronomical units?
Multiply the number of centimeters by 0.0000000000000668458712227 to get astronomical units.
What is 1 au in centimeters?
One astronomical unit is 14959787070000 centimeters.
What is 10 cm in au?
10 cm = 6.6845871e-13 au.
What exactly is a astronomical unit?
Fixed at exactly 149 597 870 700 m by the IAU in 2012.