1000 meters are in a kilometer.
Remember: King Henry Died By Drinking Chocolate Milk (Kilo, hector, deca, base, deci, centi, milli). The base of a measurement has no prefix (ex. meter) and the others are prefixes added to the front. when you move one position from right to left, you multiply by 10. Since kilo is three to the left of the base (meter), it is 10 time 10 times 10 or 1000. Therefore, there are 1000 meters in a kilometer.