4 ms·

No one uses "mega" for grams either.

• khedoros 11y ago
  Why not? It shows the relationship between itself and other metric units better than "tonne" does. It would start sounding natural if people started using it.
  • imaginenore 11y ago
    Because "mega" is ambiguous. It can mean different things.
    • khedoros 11y ago
      Can it? How so? As a unit prefix, I only know it to mean "a multiple of 10^6"