Astronomical Unit to Parsec Converter
Convert Astronomical Unit (AU) to Parsec (pc) instantly. 1 AU = 4.848137e-6 pc.
Length Converter
31 units available
1 AU = 4.848137e-6 pc
Formula:
pc = AU × 0.0000048481With your value: 1 AU = 4.848137e-6 pc
How big is that?
Everyday references on a logarithmic scale, all expressed in astronomical unit so you can sanity-check the result.
Other Astronomical Unit to Parsec conversions
Astronomical Unit to Parsec Conversion Table
| Astronomical Unit (AU) | Parsec (pc) |
|---|---|
| 0.5 | 2.424068e-6 |
| 1 | 4.848137e-6 |
| 2 | 9.696274e-6 |
| 5 | 2.424068e-5 |
| 10 | 4.848137e-5 |
| 15 | 7.272205e-5 |
| 20 | 9.696274e-5 |
| 25 | 0.000121 |
| 50 | 0.000242 |
| 100 | 0.000485 |
| 250 | 0.001212 |
| 500 | 0.002424 |
| 1000 | 0.004848 |
Parsec to Astronomical Unit Conversion Table
| Parsec (pc) | Astronomical Unit (AU) |
|---|---|
| 0.5 | 103,132.403124 |
| 1 | 206,264.806247 |
| 2 | 412,529.612494 |
| 5 | 1,031,324.031235 |
| 10 | 2,062,648.062471 |
| 15 | 3,093,972.093706 |
| 20 | 4,125,296.124942 |
| 25 | 5,156,620.156177 |
| 50 | 10,313,240.312355 |
| 100 | 20,626,480.62471 |
| 250 | 51,566,201.561774 |
| 500 | 103,132,403.123548 |
| 1000 | 206,264,806.247096 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Astronomical Unit (AU)
Length
The astronomical unit is exactly 149 597 870 700 m (IAU Resolution B2, 2012).
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
Parsec (pc)
Length
One parsec is 648 000/π astronomical units ≈ 3.085 677 581 × 10¹⁶ m.
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
How to Convert Astronomical Unit to Parsec
To convert from Astronomical Unit (AU) to Parsec (pc), multiply the value by 4.848137e-6.
Formula: pc = AU × 0.0000048481
Reverse: AU = pc × 206,264.8062470964
Step-by-Step Example
- Start with your value in Astronomical Unit. For example: 5 AU
- Multiply by the conversion factor: 5 x 4.848137e-6
- The result is: 2.424068e-5 pc
About Astronomical Unit
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
Common uses: planetary science, orbital mechanics, astronomy.
About Parsec
The parsec is the distance at which one astronomical unit subtends an angle of one arcsecond, about 3.26 light years. Professional astronomers prefer it to the light year.
Common uses: astrophysics, star catalogues, cosmology.
Frequently Asked Questions
How many Parsec are in 1 Astronomical Unit?
There are exactly 4.848137e-6 Parsec in 1 Astronomical Unit. This means the conversion factor from Astronomical Unit to Parsec is 4.848137e-6.
What is the formula to convert Astronomical Unit to Parsec?
The formula to convert Astronomical Unit to Parsec is: pc = AU × 0.0000048481. For example, to convert 10 Astronomical Unit to Parsec, you would multiply 10 by 4.848137e-6.
What is a Astronomical Unit?
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
What is a Parsec?
The parsec is the distance at which one astronomical unit subtends an angle of one arcsecond, about 3.26 light years. Professional astronomers prefer it to the light year.
What are the common uses of Astronomical Unit?
The Astronomical Unit is commonly used in planetary science, orbital mechanics, astronomy.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Astronomical Unit to Parsec converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/astronomical_unit-to-parsec