Light Years to Parsecs (ly to pc)
Free online light year to parsec 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 light year value by 0.30660139 — i.e. pc = ly × 0.30660139
Quick check: 1 ly = 0.30660139 pc
Quick check: 1 ly = 0.30660139 pc
Light Years to Parsecs conversion table
| Light Years (ly) | Parsecs (pc) |
|---|---|
| 1 ly | 0.30660139 pc |
| 2 ly | 0.61320279 pc |
| 3 ly | 0.91980418 pc |
| 4 ly | 1.22640558 pc |
| 5 ly | 1.53300697 pc |
| 6 ly | 1.83960836 pc |
| 7 ly | 2.14620976 pc |
| 8 ly | 2.45281115 pc |
| 9 ly | 2.75941254 pc |
| 10 ly | 3.06601394 pc |
| 15 ly | 4.59902091 pc |
| 20 ly | 6.13202788 pc |
| 25 ly | 7.66503484 pc |
| 30 ly | 9.19804181 pc |
| 40 ly | 12.26405575 pc |
| 50 ly | 15.33006969 pc |
| 75 ly | 22.99510453 pc |
| 100 ly | 30.66013938 pc |
| 250 ly | 76.65034845 pc |
| 500 ly | 153.30069689 pc |
| 1,000 ly | 306.60139379 pc |
How to convert light years to parsecs
To convert light years to parsecs, multiply the amount in light years by 0.30660139. For example, 10 ly = 3.06601394 pc. 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 parsecs are in one light year?
One light year is exactly 0.30660139 parsecs.
How do I convert ly to pc?
Multiply the ly value by 0.30660139 to get pc. The converter at the top of this page does this automatically and works in both directions.
How much is 100 light years in parsecs?
100 light years equals 30.66013938 parsecs.