Miles to Kilometers

About this conversion

The mile is one of the most visible reminders that the United States kept its traditional units. Road signs, speed limits, odometers and running races are all expressed in miles, while almost every other country measures distance in kilometers. Cross the border from Michigan into Ontario and the speed limit suddenly changes from 70 mph to 100 km/h, forcing a quick mental adjustment at the wheel. The same happens with hiking trails, cycling routes and marathon training plans, which mix the two units depending on which side of the border they were written. The mile traces back to the Roman "mille passus", a thousand double paces, while the kilometer was born from the rational meter of the French Revolution. This converter gives instant, accurate answers, and the table below covers the distances people look up most often.

Quick reference

Common values at a glance

Real-world example

Questions & answers

Frequently asked questions