Km to miles converter
Convert between kilometers (km) and miles (mi) instantly.
- Result
- 0.6214
How it's calculated
One mile equals exactly 1.609344 kilometers. To convert km to miles, divide by that factor; to convert miles to km, multiply by it.
miles = kilometers ÷ 1.609344
Handy for reading speed limits and road distances when traveling to countries that use miles (US, UK), or for comparing well-known race distances like the marathon or half marathon.
kilometers = miles × 1.609344
In running, a marathon (42.195 km) equals 26.22 miles and a half marathon equals 13.11 miles; many US-made running apps and watches display pace in minutes per mile instead of minutes per kilometer.
Worked example
42.195 km (a marathon) equals 42.195 ÷ 1.609344 ≈ 26.22 miles. A 70 mph highway speed limit in the US equals 70 × 1.609344 ≈ 112.7 km/h.
Frequently asked questions
- How many miles is 1 km?
- 1 kilometer equals 0.621371 miles.
- How many km is 1 mile?
- 1 mile equals exactly 1.609344 kilometers.
- Does this work for speed?
- This calculator converts distances; for speed (km/h to mph) the same conversion factor applies, but to the time unit as well.
- Are US speed limits in miles?
- Yes, road signs in the United States and the UK use miles per hour (mph), not km/h.
- How do I convert my pace from min/km to min/mile?
- Multiply the min/km pace by 1.609344; for example, a 5:00 min/km pace is roughly 8:03 min/mile.