Astronomical Unit Converter
Convert between AU, light-years, and parsecs.
Astronomical Unit Converter
Quick Reference
1 AU = 149,597,870.7 km (Earth-Sun distance)
1 Light-Year = 9.461 x 10¹² km
1 Parsec = 3.262 light-years = 206,265 AU
Nearest star (Proxima Centauri): 1.3 pc = 4.24 ly