How Many Kilometers in a Mile?
A mile equals about 1.609 kilometers. Here is the exact value, a quick conversion chart, the formula, and the math behind common running distances.
Last updated: 2026-05-21
There are about 1.609 kilometers in 1 mile. The exact value is 1.609344 km, which comes from the international agreement that defines one mile as precisely 1,609.344 meters. For everyday use, 1 mile ≈ 1.61 km is plenty accurate.
Miles to Kilometers Chart
Use this chart for quick lookups, including the most common running race distances:
| Miles | Kilometers |
|---|---|
| 1 mile | 1.609 km |
| 2 miles | 3.219 km |
| 3 miles | 4.828 km |
| 4 miles | 6.437 km |
| 5 miles | 8.047 km |
| 6 miles | 9.656 km |
| 7 miles | 11.265 km |
| 8 miles | 12.875 km |
| 9 miles | 14.484 km |
| 10 miles | 16.093 km |
| 3.107 miles (5K) | 5 km |
| 6.214 miles (10K) | 10 km |
| 13.109 miles (half marathon) | 21.0975 km |
| 26.219 miles (full marathon) | 42.195 km |
The Formula
Converting between the two units is one multiplication. To turn miles into kilometers, multiply by the conversion factor:
km = miles × 1.60934
To reverse it and turn kilometers back into miles, divide by the same factor (or multiply by its reciprocal, 0.621371):
miles = km ÷ 1.60934
Need a faster estimate without a calculator? Multiply miles by 1.6, or simply add 60 percent. That puts you within about half a percent of the exact answer − close enough for trip planning and pace checks.
Running Distances
Race distances are set in kilometers, so runners on imperial training plans constantly convert them. Here is how the standard events translate:
- 5K: 5 km = 3.107 miles
- 10K: 10 km = 6.214 miles
- Half marathon: 21.0975 km = 13.109 miles
- Marathon: 42.195 km = 26.219 miles
The marathon distance of 42.195 km is fixed by World Athletics, which is why the imperial figure lands on the oddly specific 26.219 miles (often rounded to 26.2). The same factor applies to pace: a 5-minute-per-kilometer pace works out to roughly 8 minutes per mile.
For any value not on this page − including odd distances, speeds, and pace splits − run the numbers through our length converter for an exact, instant result.