. . . it seems weird that these are reported with a lowercase 'k' but 'M' and so on remain uppercase.

For SI units, the abbreviations are defined, so a lowercase k for kilo and uppercase M for mega is correct. Lower case m is milli, c is centi, d is deci. Uppercase G is giga, T is tera and so on.

https://en.wikipedia.org/wiki/International_System_of_Units#...

▲

none_to_remain 2 days ago | parent [-]

Of course! I was being silly and just thinking of "k" for the smaller one and "K" for the bigger one.

▲

EuanReid 2 days ago | parent [-]

Upper-K is for Kelvin, so can't be mixed in as a prefix in case someone decides to commit physics crimes and talk about temperature-mass (Kkg).

	▲	nayuki 2 days ago \| parent \| next [-]
		Not true. Several SI prefixes already overlap with units. m is both metre and milli-. T is tesla and tera-. c is a prefix of candela (cd) but also centi-. (G is gauss (cgs unit, not mks/SI) and giga-.)
	▲	adiabatichottub 2 days ago \| parent \| prev [-]
		Just throw some Joules on top there and it'll be alright