Millimeters ARE thousandths of meters!
There is no standard conversion between the two.
Feet divided by 5,280 = miles
The formula to convert miles into kilometers is 1 mile equals 1.6 kilometers, and 1 kilometer equals .6 miles. The converting formula is to multiply the number of units, by converting the number to obtain the new number of units.
Converting dollars to hundredweight
It depends on which scale you are converting from and which scale to. But in general you would not go by 10s.
36x64
km=1000m
There is no formula to convert voltage. Voltage is universal.
Multiply km by 3280.84
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Millimeters ARE thousandths of meters!
Multiply by 60.
Divide cms by 2.54
Seconds/3600 = Hours
feet = cms ÷ 30.48
No such formula exists. The two are not interchangeable in any way.