There are 10000 (ten thousand) decimeters in a kilometer (10000 dm in 1 km). To convert from kilometers to decimeters, multiply the kilometer value by 10000 and to convert from decimeters to kilometers, multiply the decimeter value by 0.0001 (or divide by 10000).
1 Kilometer = 10 000 Decimeter
1 Decimeter = 0.0001 Kilometer
Kilometer is a metric length unit and equals to 1000 meters. The abbreviation is "km".
Decimeter is a metric length unit and equals to one tenth of a meter. The abbreviation is "dm".