1 Parsec to Astronomical Unit
Quick answer
1 Parsec (pc) equals
206,264.806247 AU
To convert 1 Parsecs to Astronomical Units, multiply by 206,264.8062470964. Therefore, 1 Parsec (pc) equals 206,264.806247 Astronomical Unit (AU).
Formula: AU = pc × 206,264.8062470964. Calculation: 1 × 206,264.8062470964 = 206,264.806247 AU.
Convert Parsec (pc) to Astronomical Unit (AU) online with our free unit converter. In length, 1 pc = 206,264.806247 AU. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Parsec to Astronomical Unit
- Step 1 — start with the formula. AU = pc × 206,264.8062470964
- Step 2 — substitute your figure. 1 pc × 206,264.8062470964
- Step 3 — read the result. 1 pc = 206,264.806247 AU
- Step 4 — check it in reverse. pc = AU × 0.0000048481 returns Invalid pc, which matches the figure you started with.
Length Converter
31 units available
1 pc = 206,264.806247 AU
Formula:
AU = pc × 206,264.8062470964With your value: 1 pc = 206,264.8062471 AU
How big is that?
Everyday references on a logarithmic scale, all expressed in parsec so you can sanity-check the result.
Other Parsec to Astronomical Unit conversions
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 |
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 |
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.
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
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
How to Convert Parsec to Astronomical Unit
To convert from Parsec (pc) to Astronomical Unit (AU), multiply the value by 206,264.8062470964.
Formula: AU = pc × 206,264.8062470964
Reverse: pc = AU × 0.0000048481
Step-by-Step Example
- Start with your value in Parsec. For example: 5 pc
- Multiply by the conversion factor: 5 x 206,264.8062470964
- The result is: 1,031,324.031235 AU
Parsec and Astronomical Unit Relationship
Both Parsec and Astronomical Unit belong to the Astronomical system, making this an intra-system conversion within length. Since 1 Parsec equals approximately 2.063e+5 Astronomical Units, the Parsec represents a larger unit interval than the Astronomical Unit. Understanding the relationship between Parsec and Astronomical Unit is essential for accurate calculations in physics, engineering, commerce, and daily applications.
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 of Parsec: astrophysics, star catalogues, cosmology.
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 of Astronomical Unit: planetary science, orbital mechanics, astronomy.
Frequently Asked Questions
- What is 1 Parsec in Astronomical Unit?
- 1 Parsec equals 206,264.806247 Astronomical Unit.
- How many Astronomical Units are in 1 Parsec?
- There are exactly 206,264.8062470964 Astronomical Units in 1 Parsec. This means the conversion factor from Parsec to Astronomical Unit is 206,264.8062470964.
- What is the formula to convert Parsec to Astronomical Unit?
- The formula to convert Parsec to Astronomical Unit is: AU = pc × 206,264.8062470964. For example, to convert 10 Parsecs to Astronomical Units, you would multiply 10 by 206,264.8062470964.
- 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 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 are the common uses of Parsec?
- The Parsec is commonly used in astrophysics, star catalogues, cosmology.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). 1 Parsec to Astronomical Unit. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/1-parsec-to-astronomical_unit