Instant Unit Conversion
Convert Kilometers to Miles (km to mi)
Exact formula, conversion factors, live calculator, and reference charts for kilometers to miles.
Method reviewed:Exact defined factors — international yard and pound (1959), US customary gallon and cup, SI — the values NIST SP 811 lists · reviewed September 2026
Direct AnswerFormula: mi = km × 0.621371
1 kilometer is equal to approximately 0.621371 miles. To convert kilometers to miles, multiply by 0.621371 (or divide by 1.60934).
Live Kilometers to Miles Calculator
Formula:
mi = km × 0.621371Open full length converter →Kilometers to Miles Conversion Table
Quick reference conversion chart from 1 to 100 kilometers.
| Kilometers (km) | Miles (mi) | Mathematical Formula |
|---|---|---|
| 1 km | 0.6214 mi | 1 × 0.621371 |
| 2 km | 1.2427 mi | 2 × 0.621371 |
| 5 km | 3.1069 mi | 5 × 0.621371 |
| 10 km | 6.2137 mi | 10 × 0.621371 |
| 15 km | 9.3206 mi | 15 × 0.621371 |
| 20 km | 12.4274 mi | 20 × 0.621371 |
| 25 km | 15.5343 mi | 25 × 0.621371 |
| 50 km | 31.0686 mi | 50 × 0.621371 |
| 75 km | 46.6028 mi | 75 × 0.621371 |
| 100 km | 62.1371 mi | 100 × 0.621371 |
Frequently Asked Questions
How many miles is 1 km?
1 km equals 0.621371 miles. A 5K run is approximately 3.1 miles.