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?
Not really. I would be curious if other people immersed in SI only have similar issues to yours. Minutes and hours are based off of multiples of 12, and with feet and inches that’s already one we deal with regularly.