The answer depends on where the numbers are.
You don't convert from units to "numbers". You convert from one unit to another unit. You can convert from km to meters, to millimeters, or to some other unit of length.
None. A millimetre is a unit of measurement of length. It contains no numbers.
Kilometres.
a straight line distance between two points is known as length. its SI unit is meter (m).
A meter is a unit of length; a milliliter is a unit of volume.
The pound is a mass unit while inch is a length unit
It is impossible to convert between centimetres and ounces. One is a unit of length, while the other is a unit of mass.
A centimeter is a unit of length, a cubic centimeter is a unit of volume.
Kilometres are the appropriate unit.
The frontal length.
Kilometers
We can measure how long things are , how tall,or how far apaart they are .Those are examples of length meaasurements. The basic unit of length is meters.