Parsecs to Light Years (pc to ly)
Free online parsec to light year converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
LENGTH CONVERTER — INSTANT RESULT
Formula: multiply the parsec value by 3.26156378 — i.e. ly = pc × 3.26156378
Quick check: 1 pc = 3.26156378 ly
Quick check: 1 pc = 3.26156378 ly
Parsecs to Light Years conversion table
| Parsecs (pc) | Light Years (ly) |
|---|---|
| 1 pc | 3.26156378 ly |
| 2 pc | 6.52312755 ly |
| 3 pc | 9.78469133 ly |
| 4 pc | 13.04625511 ly |
| 5 pc | 16.30781889 ly |
| 6 pc | 19.56938266 ly |
| 7 pc | 22.83094644 ly |
| 8 pc | 26.09251022 ly |
| 9 pc | 29.35407399 ly |
| 10 pc | 32.61563777 ly |
| 15 pc | 48.92345666 ly |
| 20 pc | 65.23127554 ly |
| 25 pc | 81.53909443 ly |
| 30 pc | 97.84691332 ly |
| 40 pc | 130.46255109 ly |
| 50 pc | 163.07818886 ly |
| 75 pc | 244.61728329 ly |
| 100 pc | 326.15637772 ly |
| 250 pc | 815.39094429 ly |
| 500 pc | 1,630.78188858 ly |
| 1,000 pc | 3,261.56377717 ly |
How to convert parsecs to light years
To convert parsecs to light years, multiply the amount in parsecs by 3.26156378. For example, 10 pc = 32.61563777 ly. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between metric and imperial/US customary length units, plus nautical, astronomical and survey units. The meter is the SI base unit of length; all factors below are exact definitions where a legal definition exists.
Frequently asked questions
How many light years are in one parsec?
One parsec is exactly 3.26156378 light years.
How do I convert pc to ly?
Multiply the pc value by 3.26156378 to get ly. The converter at the top of this page does this automatically and works in both directions.
How much is 100 parsecs in light years?
100 parsecs equals 326.15637772 light years.