Calculate Light Year

Usually it is difficult to understand planetary terminologies like Light Year. So this app helps us to calculate Light year into kilometres and miles.Usually Miles are more easy to understand so this app really helpful to calculate and measure distance between earth and planets.

This app really a fantastic tool for astronomers and students who would like to know distance.It is really easy to understand and learn Light Year unit. Light Year is a unit of distance.Kids most of the time need to learn distance from earth and we are interested to tell them the real distance in miles. So this is a helping tool to educate people.

The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi).[note 1] As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).[2] Because it includes the word "year", the term light-year may be misinterpreted as a unit of time.

The speed of light is exactly 299,792,458 m/s. That’s the easy part.As for how long a year is, it actually depends on the year. Mostly because it is a human scale, and it is somewhat arbitrary. There’s quite some debate on how long a year is exactly, as you can see in a quick Google search (for example here). For the sake of this argument let’s take the conclusion posted on that link, which is 365d 5h 48m 59.2s. Assuming a day is exactly 24 hours, an hour is exactly 60 minutes and a minute is exactly 60 seconds, this gives us: