Convert ångströms to astronomical units
1 Å = 0.000000000000000000000668458712227 au — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
How to convert ångströms to astronomical units
Multiply the number of ångströms by 0.000000000000000000000668458712227 to get astronomical units.
Ångström: Convenient for atomic radii and X-ray wavelengths.
Astronomical unit: Fixed at exactly 149 597 870 700 m by the IAU in 2012.
Ångström to Astronomical unit conversion table
| Ångströms (Å) | Astronomical units (au) |
|---|---|
| 1 Å | 6.6845871e-22 |
| 2 Å | 1.3369174e-21 |
| 3 Å | 2.0053761e-21 |
| 5 Å | 3.3422936e-21 |
| 10 Å | 6.6845871e-21 |
| 20 Å | 1.3369174e-20 |
| 25 Å | 1.6711468e-20 |
| 50 Å | 3.3422936e-20 |
| 100 Å | 6.6845871e-20 |
| 250 Å | 1.6711468e-19 |
| 500 Å | 3.3422936e-19 |
| 1000 Å | 6.6845871e-19 |
Astronomical unit to Ångström conversion table
| Astronomical units (au) | Ångströms (Å) |
|---|---|
| 1 au | 1.4959787e+21 |
| 2 au | 2.9919574e+21 |
| 3 au | 4.4879361e+21 |
| 5 au | 7.4798935e+21 |
| 10 au | 1.4959787e+22 |
| 20 au | 2.9919574e+22 |
| 25 au | 3.7399468e+22 |
| 50 au | 7.4798935e+22 |
| 100 au | 1.4959787e+23 |
| 250 au | 3.7399468e+23 |
| 500 au | 7.4798935e+23 |
| 1000 au | 1.4959787e+24 |
Frequently asked
How many astronomical units are in a ångström?
One ångström equals 6.684587122e-22 astronomical units (Å → au). That figure is exact, not rounded.
How do you convert ångströms to astronomical units?
Multiply the number of ångströms by 0.000000000000000000000668458712227 to get astronomical units.
What is 1 au in ångströms?
One astronomical unit is 1.495978707e+21 ångströms.
What is 10 Å in au?
10 Å = 6.6845871e-21 au.
What exactly is a ångström?
Convenient for atomic radii and X-ray wavelengths.
What exactly is a astronomical unit?
Fixed at exactly 149 597 870 700 m by the IAU in 2012.