Kilometers to Miles Converter
There are 0.621371 miles in one kilometer. To convert kilometers to miles, multiply by 0.621371.
How to Convert Kilometers to Miles
To convert kilometers to miles, multiply by 0.621371. For an exact result, divide by 1.609344 instead.
For example: 5 kilometers × 0.621371 = 3.10686 miles.
Where This Comes Up
Race distances, rental-car dashboards in Europe and hiking trails outside the United States are all in kilometers. Americans reading them need miles to judge how far that actually is.
A 10-kilometer race is 6.21371 miles, so a 50-minute 10K is an 8:03 per mile pace.
What People Get Wrong
A 5K is 3.10686 miles, not 3 miles. The difference of about 190 yards is why pacing a 5K off a 3-mile plan leaves runners short.
Kilometers to Miles Conversion Table
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.24274 |
| 3 | 1.86411 |
| 4 | 2.48548 |
| 5 | 3.10686 |
| 6 | 3.72823 |
| 7 | 4.3496 |
| 8 | 4.97097 |
| 9 | 5.59234 |
| 10 | 6.21371 |
| 11 | 6.83508 |
| 12 | 7.45645 |
| 13 | 8.07783 |
| 14 | 8.6992 |
| 15 | 9.32057 |
| 16 | 9.94194 |
| 17 | 10.5633 |
| 18 | 11.1847 |
| 19 | 11.8061 |
| 20 | 12.4274 |
| 25 | 15.5343 |
| 30 | 18.6411 |
| 40 | 24.8548 |
| 50 | 31.0686 |
| 75 | 46.6028 |
| 100 | 62.1371 |
| 250 | 155.343 |
| 500 | 310.686 |
| 1,000 | 621.371 |
About These Units
The kilometer
A kilometer is 1,000 meters, a little under two thirds of a mile. Road signs, race distances and car odometers outside the United States are all in kilometers.
The mile
The statute mile is 5,280 feet, or exactly 1,609.344 meters. It is the unit on every American road sign and speedometer. A nautical mile is a different unit of 1,852 meters.
Definitions follow NIST Special Publication 811, Appendix B. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
How many miles is 5 km?
5 kilometers is 3.10686 miles.
How fast is 100 km/h in mph?
100 kilometers per hour is 62.1371 miles per hour, just above a 60 mph limit.
What is a quick way to estimate miles from kilometers?
Multiply by 6 and drop the last digit: 80 km becomes 480, then 48 miles, against the exact 49.7. Taking five eighths is closer still.
How many miles is a half marathon?
A half marathon is 21.0975 kilometers, or 13.1094 miles.