To convert astronomical units to angstroms, multiply by 1.495978707e+21.
The calculation uses 1 AU = 1.495978707e+21 Å. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
value in Å = value in AU × 1.495978707e+21
AU- Input unit: astronomical units
Å- Output unit: angstroms
How to use this calculator
- Enter a value in AU.
- Multiply by the stored conversion factor.
- Read the result in Å; divide by the same factor to convert back.
Worked examples
Worked conversion
1 AU × 1.495978707e+21 ≈ 1.495978707e+21 Å.
Reverse conversion
1.495978707e+21 Å ÷ 1.495978707e+21 ≈ 1 AU. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 1.495978707e+21 Å per AU.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
AU to Å table
| AU | Å (rounded) |
|---|---|
| 0 | 0 |
| 1 | 1.495978707e+21 |
| 2 | 2.991957414e+21 |
| 5 | 7.479893535e+21 |
| 10 | 1.495978707e+22 |
| 100 | 1.495978707e+23 |
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