Light-year
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Distance light travels in one Julian year
About Light-year (ly)
The distance light travels in one Julian year -- approximately 9.461 trillion kilometers -- the light-year is the standard unit for expressing interstellar distances. Proxima Centauri, the nearest star beyond the Sun, lies about 4.24 light-years away. Despite its name, the light-year measures distance, not time.
- Category
- Length
- Symbol
- ly
- Also known as
- light year light-years lightyear
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Frequently Asked Questions
What is a Light-year (ly)?
Distance light travels in one Julian year
How many Meter (m) are in one Light-year (ly)?
One Light-year (ly) equals 9,460,730,472,580,800 Meter (m).
How many Kilometer (km) are in one Light-year (ly)?
One Light-year (ly) equals 9,460,730,472,580.8 Kilometer (km).
How many Centimeter (cm) are in one Light-year (ly)?
One Light-year (ly) equals 946,073,047,258,080,000 Centimeter (cm).
How do I convert Light-year to Meter?
To convert Light-year to Meter, multiply the value by 9,460,730,472,580,800 (1 ly = 9,460,730,472,580,800 m).