It is not possible to compare units of mass (kilogram and milligram) with units of distance (kilometre, millimetre).
Millimeter is the smallest unit among centimeter, kilometer, millimeter, and meter.
Milligram
Millimeter is smallest.
From smallest to largest: milligram, gram, kilogram.
millimeter
Millimeter is the smallest measurement.
Millimeter, centimeter, meter, kilometer.
Millimeter centimeter meter kilometer is the right order
From smallest to largest:MillimeterCentimeterMeterKilometer
From largest to smallest: kilogram, then gram, then milligram.
1,000,000 millimeters (smallest) = 100,000 centimeters = 10,000 decimeters = 1,000 meters = 1 kilometer Largest)
Kilometre, metre, centimetre, millimetre.