How to Convert Kilometers to Miles Converting kilometers to miles is straightforward using a simple multiplication factor. The metric system and imperial system have a fixed conversion ratio. The Mathematical Formula To convert kilometers to miles, multiply the kilometers by 0.621371: Miles = Kilometers � 0.621371 Kilometers to Miles Conversion Table Kilometers (km) Miles (mi) Common Use Case 1 km0.621 miShort distance 5 km3.107 miLocal run 10 km6.2137 miRoad race 42.195 km26.219 miMarathon 100 km62.137 miLong trip Frequently Asked Questions What is 1 km in miles? 1 kilometer equals 0.621371 miles. How do I convert km to mi? Multiply the number of kilometers by 0.621371 to get miles.
