Millimeters to Lightyears

Bookmark Page Lightyears to Millimeters (Swap Units)

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ly =
mm * 0.00000000000000000010570
 
 
 
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More information: Millimeters
Millimeters to Lightyears table - Click here for table options
Millimeters Lightyears
0mm 0.00ly
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Millimeters Lightyears
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Millimeters Lightyears
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Millimeters

The millimetre is a unit of length in the metric system, equivalent to one thousandth of a metre (the SI base unit of length).

One meter was defined in 1983 by the 17th conference of weights and measures as “the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second” and the millimetre by definition is derived as being 1/1000th of that value.

ly =
mm * 0.00000000000000000010570
 
 
 

Lightyears

A lightyear is the distance that light travels in one year. Since there are various definitions for the length of a year, there are correspondingly slightly different values for a lightyear. One lightyear corresponds to about 9.461e15 m, 5.879e12 mi, or 63239.7 AU, or 0.3066 pc.

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