Quick Miles to Kilometers Converter
Enter a distance in miles and click convert. The calculator uses the exact conversion factor: 1 mile = 1.609344 km.
Enter miles to see the result.
How to convert miles to kilometers
The mile is commonly used in the United States and a few other places, while the kilometer is the standard distance unit in the metric system. Converting between the two is simple once you know the factor.
Formula: kilometers = miles × 1.609344
So if you travel 10 miles, that is:
10 × 1.609344 = 16.09344 km
Why this calculator is useful
- Travel planning: Quickly understand distances on international maps.
- Running and cycling: Convert race distances and workout routes.
- Education: Check homework and practice unit conversion.
- Driving abroad: Make sense of road signs in kilometers.
Common miles to km conversions
| Miles | Kilometers |
|---|---|
| 1 mile | 1.609 km |
| 3 miles | 4.828 km |
| 5 miles | 8.047 km |
| 6.2 miles | 9.977 km (about 10k) |
| 10 miles | 16.093 km |
| 13.1 miles | 21.082 km (half marathon) |
| 26.2 miles | 42.165 km (marathon) |
| 50 miles | 80.467 km |
| 100 miles | 160.934 km |
Step-by-step example
Convert 7.5 miles to kilometers
- Write the formula: km = miles × 1.609344
- Insert miles: km = 7.5 × 1.609344
- Calculate: km = 12.07008
- Round if needed: 7.5 miles ≈ 12.07 km
Frequently asked questions
How many kilometers are in 1 mile?
Exactly 1.609344 kilometers.
Can I round to 1.61?
Yes, for everyday use, 1 mile ≈ 1.61 km is usually fine. For precise work, use 1.609344.
How do I convert kilometers back to miles?
Use the reverse formula: miles = kilometers ÷ 1.609344.
Final tip
If you often switch between metric and imperial units, bookmark this page. A fast miles-to-km conversion can save time while planning routes, comparing distances, and tracking fitness goals.