How many X unit in 1 light-second?
The answer is 2.9917251271914E+21.
We assume you are converting between X unit and light second.
You can view more details on each measurement unit: X unit or
light-second
The SI base unit for length is the metre.
1 metre is equal to 9979320851331.9 X unit, or 3.3356409519815E-9 light-second.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between X unit and light seconds.
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A light-second is a unit of length. It is defined as the distance light travels in an absolute vacuum in one second or 299,792,458 meters. Note that this value is considered exact, since the meter is actually (as of 1983) defined in terms of the light second. It is just over 186,282 miles and almost 109 feet.

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