Generally there is a two finger salute that will convert it to MILES which by the way are now used in only one country world wide (USA) Though people have been trying to get us to convert for what, about 50 years? (Will give you as hort course in metrics in a paragraph or two)
a Kilometer is 5/8 of a mile so KM*5/8= Miles
Short course:
You are going down the road.. You pass a sign: Speed Limit 40...
You glance at your Speedometer which is calabrated in the same units used on the sign and the needle points firmly to 60.
You glance in the rear view mirror and there he is.. Officer Smiley, LIghts on, Indicating he wants you to pull over.
Now: Your task is to predict the future.
A speeding ticket for sure.. KM per Hour or MPH?
Right don't matter you are going to be ticked for 60 in a 40, units do not matter (Well they may when the judge issues the fine but not now).
And that is all you need to know. It is all relative.. You do not need to know thins like 2.2 pounds per KG (which by the way is not correct since pounds is apples and KG is potatoes) Nor 5/8 Miles pr KM.. you only need to know your normal body temp is 37C (not 37.something) and light travels at 300million meters per second (or close enough that the difference, is not important for cutting antennas) and if you go 60 in a 40.. Nothing improves your driving like a ticket.
Oh why did I say Pounds and KG are like apples and potatos?
Well a 100 KG man, here on earth, on the equator, at sea level would be 220 pounds.
Move that same man to the moon and 220/6= 36.6666 pounds.. But he is still 100KG
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times