A light-year is the distance that light travels in one year. It's a way to measure incredibly long distances in space.

While rarely used in everyday life, this conversion helps illustrate the mind-boggling scale of interstellar distances in a way that's conceptually easier to grasp by relating it to a familiar, albeit tiny, unit.

25 light-years is equal to 9,312,007,874,015,748,096.0000 inches.

No, this conversion is primarily for educational or illustrative purposes to demonstrate extremely large astronomical distances. You wouldn't use it for common measurements.