Could someone show me the formula to convert KM to Light-Years? Thanks for any help you can give me.

Answer 1

one light-year is the distance light travels in one year.

Light travels at a speed of 3*10^8 m/s.
In one year, there are 365*24*60*60 seconds.

So one light-year
= 3*10^8 * 365*24*60*60 m
= 9.461*10^15 m
= 9.461*10^12 km (since 1km=1000m)

Answer 2

Light Year is the distance traveled by light in one year.

The speed of light in vacuum is approximately 3 x 10^5 km/s.
And 1 year = 31,536,000 seconds.
Thus,
1 Light-Year = 3 x 10^5 km/s * 31,536,000 s = 9.4608 x 10^12 km

Answer 3

Thank You for the help.