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How many miles is a light year?


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light year A light-year is a unit of length, equal to just under 10 trillion kilometres. A light-year is the distance that light travels in a vacuum in one Julian year. One light-year is equal to 5,878,625,373,183.608 miles (about 6 trillion miles) or 9,460,730,472,580.8 km. It would take 37,200 years to travel one light year. ChaCha on!!

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Older Answers

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1 lightyear is 5,878,499,814,186.5 miles. Wow! Thanks for using ChaCha!

Answered by Alison B. -

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1 light year = 5,878,499,814,186.5 miles. What else can we help you with today? Thanks for asking ChaCha!

Answered by Jennifer R. -

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How many miles is a light year? A light year is 5,865,696,000,000 miles. Thank you for using CHACHA

Answered by Michael L. -

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A light year is 5,865,696,000,000 miles the distance light travels in one year. ChaCha.

Answered by Jalayne F. -

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A light year is 5,865,696,000,000 miles (9,460,800,000,000 kilometers). That's a long way! Got a question? ChaCha again!

Answered by Nicole C. -

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Light travels around 186,000 miles per second. That makes a light year roughly 5,865,696,000,000 miles. Thanks for using ChaCha!

Answered by Linda T. -

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1 lightyear is equal to 5,878,499,814,186.5 miles. Cha Cha again soon! We're here for you 24/7!

Answered by Catherine M. -

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