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Convert between kilometres, astronomical units, light-seconds, light-minutes, light-years, and parsecs.
Kilometres
149,597,870.7
Astronomical units
1
Light-seconds
499.004784
Light-minutes
8.316746
Light-years
0.000016
Parsecs
0.000005
| Journey | Kilometres | Light time |
|---|---|---|
| Earth to Moon | 384,400 km | 1.28 seconds |
| Earth to Sun (1 AU) | 149,597,870.7 km | 499 seconds |
| Sun to Jupiter | 778,500,000 km | 2,596.8 seconds |
| Sun to Neptune | 4,500,000,000 km | 15,010.38 seconds |
| Proxima Centauri | 40,208,000,000,000 km | 134,119,451.4 seconds |
A light-year is the distance light travels in one year, about 9.46 trillion kilometres. An astronomical unit is the average Earth–Sun distance. A parsec is about 3.26 light-years and is based on parallax.