Kilometers to Miles Converter
Convert kilometers (km) to miles (mi) instantly. Type a value above and the result updates while you type. 1 kilometer equals 0.621371 miles.
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 kilometer = 0.621371 miles
Multiply the kilometers value by 0.621371 to get miles. Or divide by 1.60934 to go the other way.
Kilometers to miles conversion table
| km | 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 |
| 15 | 9.32057 |
| 20 | 12.4274 |
| 25 | 15.5343 |
| 50 | 31.0686 |
| 75 | 46.6028 |
| 100 | 62.1371 |
Worked examples
- 5 km × 0.621371 = 3.10686 mi
- 42.195 km × 0.621371 = 26.2188 mi
- 100 km × 0.621371 = 62.1371 mi
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many miles are in 1 kilometer?
1 kilometer equals 0.621371 miles (km → mi).
How do you convert kilometers to miles?
Multiply the number of kilometers by 0.621371. For example: 10 km × 0.621371 = 6.21371 mi.
What is 50 km in mi?
50 km equals 31.0686 mi.
Which is bigger: 1 kilometer or 1 mile?
1 mile is bigger: 1 kilometer is only 0.621371 miles.