🌟 Light Year Converter

Convert astronomical distances and calculate travel times

Distance in Light Years
1.000000
= 9.461 T km
Parsecs
0.306602
Astronomical Units
63,241.08
Kilometers
9.461 T
Light Seconds
31.558 M
🚀 Travel Times
At speed of light
1.0 years
Voyager 1 speed (~17 km/s)
17.6 thousand years

🌌 Distances to Celestial Objects

ObjectDistanceLight Years
Moon384,400 km4.063e-8
Sun149.598 M km1.581e-5
Mars (closest)54.600 M km5.771e-6
Jupiter (average)778.500 M km8.229e-5
Proxima Centauri4.2465 ly4.246500
Sirius8.6 ly8.600000
Vega25 ly25.000000
Polaris433 ly433.000000
Betelgeuse700 ly700.000000
Center of Milky Way26000 ly26,000
Andromeda Galaxy2537000 ly2.537 M

📏 Scale Reference

1 Light Second = 299,792.46 km
1 Astronomical Unit (AU) = ~8.3 light minutes (Earth-Sun distance)
1 Light Year = 9.461 T km = 63,241.08 AU
1 Parsec = 3.262 light years

Related Converters

Length
km, mi, m
Speed
km/s, mach
Time
Years, days, hours