Miles to Kilometers Converter
Formula
km = miles × 1.609344
To convert miles to kilometers, multiply by 1.609344. One mile equals approximately 1.609 kilometers.
How to use
- Enter the distance in the Miles field.
- The converter multiplies your value by 1.609344 automatically.
- Read the result in kilometers below.
Example
Enter 5 in the Miles field. Multiplying 5 by 1.609344 gives about 8.05, so 5 miles equals roughly 8.05 kilometers.
Frequently Asked Questions
How many km is 1 mile?
1 mile = approximately 1.609 km.
How many km is a marathon?
A marathon is 26.2 miles = 42.195 km.
What is a quick way to estimate miles in kilometers without a calculator?
A handy mental shortcut is to multiply the miles by 1.6, or add about 60% to the number. So 10 miles is roughly 16 km and 60 mph is roughly 96 km/h. For more precision the exact factor is 1.609344, but the rough estimate is close enough for reading road signs or pacing a run.
How do common running distances convert to kilometers?
A 5K is 3.1 miles and a 10K is 6.2 miles, while a half marathon of 13.1 miles equals about 21.1 km. Going the other way, a 1-mile run is about 1.61 km. These conversions are useful when comparing race distances, since US events often list miles while international events use kilometers.