How many megameter in 1 light second? The answer is 299.792458. We assume you are converting between megametre and light second. You can view more details on each measurement unit: megameter or light second The SI base unit for length is the metre. 1 metre is equal to 1.0E-6 megameter, 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 megameters and light seconds. Type in your own numbers in the form to convert the units!
1 megameter to light second = 0.00334 light second
10 megameter to light second = 0.03336 light second
50 megameter to light second = 0.16678 light second
100 megameter to light second = 0.33356 light second
200 megameter to light second = 0.66713 light second
500 megameter to light second = 1.66782 light second
1000 megameter to light second = 3.33564 light second
You can do the reverse unit conversion from light second to megameter, or enter any two units below:
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.
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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