Space distance converter
Light-years, AU, parsecs and km.
How it’s worked out
1 light-years = 9,460,730,472,580.8 km · Light-year: how far light goes in a Julian year (365.25 days). Astronomical unit: 149,597,870,700 m (IAU 2012). Parsec: 648,000/π au (IAU 2015).