KM to Miles Converter

Convert between kilometers and miles instantly — no signup, nothing sent to a server.

Edit either field — the other updates automatically. 1 km = 0.621371 mi.

Formula, conversion table & examples

Formula

mi = km × 0.62

km = mi ÷ 0.62

Kilometers to Miles conversion table

Kilometers (km) Miles (mi)
1 0.62
5 3.11
10 6.21
50 31.07
100 62.14
500 310.69

Worked examples

  • 1 km = 1 × 0.62 = 0.62 mi
  • 5 km = 5 × 0.62 = 3.11 mi
  • 310.69 mi back to Kilometers: 310.69 ÷ 0.62 = 500 km

How to convert km to miles

  1. 1

    Enter a value in either field

    Type a distance into the kilometers field, or the miles field — either direction works.

  2. 2

    Read the converted value

    The other field updates instantly as you type.

  3. 3

    Adjust as needed

    Keep editing either field to try different distances.

Example use cases

1

Running & cycling pace

Convert distances or pace splits between km and miles for training logs.

2

Road trips & driving distance

Convert route distances shown in the unit your car or map doesn't use.

3

Speed limits abroad

Convert speed limits or distance signs when travelling between countries that use different units.

4

Race distances

Convert marathon, 10K, or other race distances between metric and imperial.

Frequently asked questions

How do I convert km to miles?

Multiply the distance in kilometers by 0.621371. For example, 10 km × 0.621371 ≈ 6.21 mi.

How do I convert miles to km?

Divide the distance in miles by 0.621371, or multiply by 1.60934. For example, 6.21 mi × 1.60934 ≈ 10 km.

Is this precise enough for pace or race distances?

The conversion factor used (0.621371) is accurate to 6 decimal places, which is precise enough for running paces, road-trip distances, and race distances.

Is anything I type sent to a server?

No. Every conversion runs entirely in your browser — nothing is transmitted or logged.