Table Of Contents
Light year to parsec Conversion
1 light year (ly) is equal to 0.3066013938 parsec (pc).
1 ly = 0.3066013938 pc
or
1 pc = 3.261563777 ly
Formula
To convert a length from light year (ly) to parsec (pc), divide the length in light year by 3.261563777
l(pc) = l(ly) / 3.261563777
Examples:
Convert 20 light year to parsec:
l(pc) = 20ly / 3.261563777 = 6.132027876 pc
Conversion table
| Light year (ly) | Parsec (pc) |
|---|---|
| 1 ly | 0.306601394 pc |
| 2 ly | 0.613202788 pc |
| 3 ly | 0.919804181 pc |
| 5 ly | 1.533006969 pc |
| 10 ly | 3.066013938 pc |
| 20 ly | 6.132027876 pc |
| 25 ly | 7.665034845 pc |
| 50 ly | 15.330069689 pc |
| 100 ly | 30.660139379 pc |
| 250 ly | 76.650348446 pc |
| 500 ly | 153.300696893 pc |
| 1000 ly | 306.601393786 pc |
| Parsec (pc) | Light year (ly) |
|---|---|
| 1 pc | 3.261563777 ly |
| 2 pc | 6.523127554 ly |
| 3 pc | 9.784691332 ly |
| 5 pc | 16.307818886 ly |
| 10 pc | 32.615637772 ly |
| 20 pc | 65.231275543 ly |
| 25 pc | 81.539094429 ly |
| 50 pc | 163.078188858 ly |
| 100 pc | 326.156377717 ly |
| 250 pc | 815.390944292 ly |
| 500 pc | 1630.781888584 ly |
| 1000 pc | 3261.563777167 ly |
Frequently asked questions
How do I convert light year to parsec?
Divide the value in light year by 3.261563777 to get the result in parsec. For example, 5 ly ÷ 3.261563777 = 1.533006969 pc.
How many parsec are in 1 light year?
1 light year (ly) is equal to 0.306601394 parsec (pc).
How do I convert parsec back to light year?
Use the inverse operation: multiply the value in parsec by 3.261563777 to get the result in light year.
How accurate is the light year to parsec conversion?
The converter multiplies by the conversion factor 3.261563777 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
