Light-years to parsecs
Type a value in ly to get it in pc instantly.
30.66pc
That's 2,461,168,177× as long as the distance to the Moon — nothing on our list beats it. Walking, you would cover that in 2.141×10¹⁰ years.
Convert the other way: pc to ly
What it means
How long is that?
Reference lengths are typical values. The inch, foot, yard and mile are defined exactly in meters (1 inch = 2.54 cm).
The math
How to convert ly to pc
To convert light-years to parsecs, multiply by 0.306601.
Example: 100 ly × 0.306601 = 30.6601 pc.
In the other direction, 1 pc = 3.26156 ly.
Every unit
Your length in every unit
Tables
ly to pc conversion table
| ly | pc |
|---|---|
| 1 ly | 0.306601 pc |
| 2 ly | 0.613203 pc |
| 3 ly | 0.919804 pc |
| 5 ly | 1.53301 pc |
| 10 ly | 3.06601 pc |
| 15 ly | 4.59902 pc |
| 20 ly | 6.13203 pc |
| 25 ly | 7.66503 pc |
| 30 ly | 9.19804 pc |
| 50 ly | 15.3301 pc |
| 75 ly | 22.9951 pc |
| 100 ly | 30.6601 pc |
| 150 ly | 45.9902 pc |
| 200 ly | 61.3203 pc |
| 500 ly | 153.301 pc |
| 1,000 ly | 306.601 pc |
pc to ly conversion table
| pc | ly |
|---|---|
| 1 pc | 3.26156 ly |
| 2 pc | 6.52313 ly |
| 3 pc | 9.78469 ly |
| 5 pc | 16.3078 ly |
| 10 pc | 32.6156 ly |
| 15 pc | 48.9235 ly |
| 20 pc | 65.2313 ly |
| 25 pc | 81.5391 ly |
| 30 pc | 97.8469 ly |
| 50 pc | 163.078 ly |
| 75 pc | 244.617 ly |
| 100 pc | 326.156 ly |
| 150 pc | 489.235 ly |
| 200 pc | 652.313 ly |
| 500 pc | 1,630.78 ly |
| 1,000 pc | 3,261.56 ly |
Quick answers
Quick answers
- How many pc is 1 ly?
- 1 ly is 0.306601 pc.
- How many pc is 10 ly?
- 10 ly is 3.06601 pc.
- How many pc is 100 ly?
- 100 ly is 30.6601 pc.
The units
About these units
Light-years (ly)
A light-year is the distance light covers in one Julian year: about 9.46 trillion kilometers. It measures distance, not time.
Parsecs (pc)
3.26 light-years, the astronomer’s distance unit.
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