A simple and free online calculator to convert miles to kilometers (mi to km). Includes the formula and a handy conversion chart for travel, running, and driving.
You're planning a road trip through Canada, Mexico, or basically anywhere outside the United States. You're following a training plan from an international coach that calls for a 10-mile run. You're reading a car review that states the range in miles.
While miles are common in the US and the UK, the rest of the world uses kilometers to measure distance. Being able to do a quick conversion is essential for anyone who travels, drives, or follows international sports or news.
This is a daily conversion for many people around the globe:
Travelers: Understanding road signs, map distances, and speed limits when driving in another country.
Runners & Cyclists: Converting race distances and training plans into the units you're most familiar with.
Drivers: Making sense of car specs like range and fuel efficiency.
Pilots & Sailors: Converting nautical miles to kilometers for navigation.
Forget the mental math. Get the answer in one second.
Open the Converter: Go to the FreeXTool Miles to KM Converter.
Enter the Miles: Type the number of miles you want to convert.
Get the Result: The tool will immediately show you the equivalent distance in kilometers.
1 mile = 1.61 km
5 miles = 8.05 km (Roughly a 5K race is 3.1 miles)
10 miles = 16.09 km
26.2 miles (a marathon) = 42.195 km
100 miles = 160.93 km
Need a rough estimate without a calculator? The formula is Miles x 1.60934 = Kilometers. For a quick mental trick, just take the number of miles, add half of that number, and then add another 10% of the original number. (Example: 100 miles -> 100 + 50 + 10 = 160. The actual answer is 160.9 km, so this gets you incredibly close!)
Handle all your measurement needs with these simple converters: