How come people say 5,000 km and not 5 Mm?
why not just say millions of meters or Mega meters?

  • someguy3
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    9 months ago

    Not much need to use Mm, it doesn’t come up very often. So when it does it’s easier to use thousands of km so as to not confuse people with “another” measurement.

    • ebc
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      9 months ago

      We routinely count vehicle odometers in thousands of kilometers, AKA Megameters. I’d say it’s a common enough measurement to popularize Megameters

      • someguy3
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        9 months ago

        That really doesn’t come up often enough.