Light Year Converter
Convert light years to other distance units. Essential for astronomical measurements.
1 light years =
0.306601 pc
All Conversions
0.306601
Parsecs
63,241.1
Astronomical Units
9.4610e+12
Kilometers
5.8790e+12
Miles
Formula
1 ly = 9.461 × 10^12 km
Quick Reference
1 light year
= 63,241 AU
Proxima Centauri
= 4.24 ly
3.26 ly
= 1 parsec
Milky Way
~ 100,000 ly diameter
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: NIST Guide to SI Units
by National Institute of Standards
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.