Miles to Kilometers Converter
Convert between miles and kilometers instantly. Also shows meters, feet, and yards.
Distance Converter
Conversion Formulas
Quick Reference Table
| Description | Miles | Kilometers | Meters |
|---|---|---|---|
| Quarter Mile | 0.25 | 0.402 | 402.3 |
| Half Mile | 0.5 | 0.805 | 804.7 |
| 1 Mile | 1 | 1.609 | 1,609.3 |
| 5K Race | 3.107 | 5 | 5,000 |
| 10K Race | 6.214 | 10 | 10,000 |
| Half Marathon | 13.109 | 21.097 | 21,097.5 |
| Marathon | 26.219 | 42.195 | 42,195 |
| 100 Miles | 100 | 160.934 | 160,934 |
How Do I Convert Miles to Kilometers?
Enter a distance in miles and the tool instantly shows the equivalent in kilometers. The conversion factor is 1 mile = 1.60934 km. You can also enter kilometers to convert to miles. The tool includes a reference table for common distances.
When Do I Need to Convert Miles to Kilometers?
Distance conversion is needed when traveling between countries that use different systems, following international running or cycling training plans, understanding speed limits posted in unfamiliar units, reading foreign maps, and comparing distances in travel articles or GPS applications.
What Is the Exact Mile-to-Kilometer Ratio?
One international mile equals exactly 1.609344 kilometers. One kilometer equals approximately 0.621371 miles. A quick mental approximation is that 5 miles is about 8 kilometers, or multiply miles by 1.6 for a rough estimate.
Does This Tool Convert Nautical Miles?
This tool converts statute (land) miles to kilometers. Nautical miles are a separate unit used in aviation and maritime navigation where 1 nautical mile equals 1.852 km. For nautical conversions, multiply nautical miles by 1.852.
What Are Common Mile-to-Kilometer Conversions?
Frequently needed conversions include a marathon (26.2 miles = 42.2 km), a half marathon (13.1 miles = 21.1 km), common speed limits (55 mph = 88.5 km/h, 65 mph = 104.6 km/h, 70 mph = 112.7 km/h), and a 5K race (3.1 miles). Knowing these by heart helps when training for races or interpreting speed limits in countries that use kilometers.
How Can I Quickly Estimate Miles to Kilometers?
For a quick mental estimate, multiply miles by 1.6. An even faster approximation uses the Fibonacci sequence: consecutive Fibonacci numbers approximate the mile-to-kilometer ratio. So 5 miles is about 8 km, 8 miles is about 13 km, and 13 miles is about 21 km. This trick gives surprisingly accurate results for everyday use and is easy to remember for travelers.