10 to 15
1,000 m (meters) in a kilometer (km). 1,000 mm (millimeters) in a meter. There are 1000 (one thousand) meters in one kilometer.
1 mile (terrestrial) = 1609.344 meters
1 meter=0.001 kilometers
km is an abbreviation for kilometre (or kilometer). The prefix "kilo" indicates a thousand. So there are a thousand grams in a kilogram. Take it from there.