Hi, I think in metric units, so almost everything is some form of a power of 10, like a kilogram is a 1000 grams, etc.
Sometimes I will think of an hour and half as 150 minutes before remembering that it is 90 minutes.
Does something similar happen to imperial units users? Because as far as I understand you don’t have obvious patterns that would cause you to make these mistakes, right?
I’m in the USA, and I certainly don’t use the imperial system exclusively — my (domestic) education was in metric (undergrad and grad school), and now I work at an American company and use metric exclusively.
And yes, I get confused sometimes. Often I get time and currency confused, so if something is $1.59 I think it’s a penny shy of $2, for instance.