How to convert kilometres to miles
Enter a distance in kilometres and read it in miles. The result updates as you type, and you can swap the units or copy the answer.
One kilometre is 0.621371192237 miles, which follows from the exact definition of the mile as 1.609344 km.
1 kilometre = 0.621371192237 miles
Formula: miles = kilometres × 0.621371192237
- Multiply the number of kilometres by 0.621371192237.
- For a quick estimate, divide by 1.6, which is within 1% of the exact value. Multiplying by 0.6 is quicker but runs about 3.4% low.
Common conversions
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 5 km | 3.10686 mi |
| 10 km | 6.21371 mi |
| 21.0975 km | 13.1094 mi |
| 42.195 km | 26.2188 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
| 500 km | 310.686 mi |
Values are computed by the same converter as above, rounded to six significant digits. Need the other direction? See Miles to Kilometres.
Worked examples
A 5K run
5 km = 3.11 mi.
A 10K run
10 km = 6.21 mi.
A marathon
The marathon distance of 42.195 km is 42.195 km = 26.22 mi.
A cycling ride
Cyclists call a 100 km ride a metric century. 100 km = 62.1 mi, well short of the 100 miles that a full century ride covers.
Things to keep in mind
- This gives statute miles, as used on roads in the UK and US. Nautical miles are a different unit, found in the length converter.
- Running distances are often rounded in conversation: a 10K is usually called "about 6.2 miles".