Question: is km bigger than cm?
Answer: Kilometers (km) are larger than centimeters (cm), so you expect there to be less than one km in a cm. Cm is 10 times smaller than a dm; a dm is 10 times smaller than a m, etc. Since you are going from a smaller unit to a larger unit, divide. ... 1 centimeter (cm) = 0.00001 kilometers (km).