| Did you mean to convert | light-second | to | megametre millimetre |
How many light-second in 1 Mm? The answer is 0.0033356409519815. We assume you are converting between light second and megametre. You can view more details on each measurement unit: light-second or Mm The SI base unit for length is the metre. 1 metre is equal to 3.3356409519815E-9 light-second, or 1.0E-6 Mm. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light seconds and megameters. Type in your own numbers in the form to convert the units!
1 light-second to Mm = 299.79246 Mm
2 light-second to Mm = 599.58492 Mm
3 light-second to Mm = 899.37737 Mm
4 light-second to Mm = 1199.16983 Mm
5 light-second to Mm = 1498.96229 Mm
6 light-second to Mm = 1798.75475 Mm
7 light-second to Mm = 2098.54721 Mm
8 light-second to Mm = 2398.33966 Mm
9 light-second to Mm = 2698.13212 Mm
10 light-second to Mm = 2997.92458 Mm
You can do the reverse unit conversion from Mm to light-second, or enter any two units below:
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.
A megametre (American spelling: megameter, symbol: Mm) is a unit of length equal to 10^6 metres (from the Greek words megas = big and metro = count/measure). Its customary equivalent is 621.37 miles.
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