I think this is mostly a US thing. Why use yearly salary? You’re not paid once a year, are you? Most likely once a month. Referencing monthly salary makes much more sense.
“I’m making 50k”. Great, now I have to guess - dollars? Monthly? Yearly? If yearly then what’s the monthly paycheck? Net? Gross?
$50k means $25/hr because people work 2000 hours per year.
That’s a very good rule of thumb.
Speak for yourself Mr work-life balance 😀