Well a light year is 31.04×1015 ft or 31,040,000,000,000,000 ft so one light year is
2586666666666667 inches
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A lightyear is a unit of distance and not time. It's the distance light travels in a year, roughly equal to 5.88 trillion miles or 9.46 trillion kilometers. Converting that to inches would result in an extremely large number that is not practically useful.
There are approximately 9.46 trillion kilometers in a lightyear. To convert this to millimeters, 1 kilometer is equal to 1,000,000 millimeters. Therefore, there are about 9.46 x 10^18 millimeters in a lightyear.
Betelgeuse is about 640 light-years away from Earth.
A lightyear is a unit of distance, not time. It represents the distance that light can travel in one year, which is about 5.88 trillion miles.
One lightyear is equivalent to 9.461 trillion kilometers. To find the distance in kilometers per hour, you would need to divide this by the number of hours in a year (8,760 hours). This would give you approximately 1,080,815,900 kilometers in one lightyear per hour.
60 inches is equivalent to 1.52 meters.