True enough, if you've played enough racing or flight games, and have driven/flown with different measuring units, its not to hard to get an idea, unless you need close accuracy for putting in to the bombing computer/aiming system. I'm sure persons could find a large graphical chart that slightly be quicker, but thats just splitting hairs.
Useful is as usefully needed by some

(in Forest Gump voice)
But I do find that being raised in the post metric UK; where travelling measures are in imperial, and 90% weights & engineering draughtings are in metric; that I never learned what a furlong is in feet or miles to kilometers, or how many feet to a mile and such imperial weirdness (like there used to be on average dependant on international exhanges and gold standard, 112p - 120p to £1)...
Although I'm very aware that 2 slow poured 275ml/2.75cl/0.275dl etc) Carlsberg bottles will fill a pint glass with a 10-ish mike mike's/quater-ish inch of head/froth upon it.