How to use KM to Miles
- Type a value in kilometers.
- The result in miles appears instantly.
- Type in the second box to convert the other way.
How to convert kilometers to miles
Multiply the value in kilometers by 0.621371. Formula: mi = km ÷ 1.6093. Example: 10 km × 0.621371 = 6.2137 mi.
Common kilometers to miles conversions
5 km = 3.1069 mi. 25 km = 15.5343 mi. 50 km = 31.0686 mi. 100 km = 62.1371 mi.
Quick mental math
Quick estimate: multiply by 6 and divide by 10. 10 km ≈ 6 miles (exact: 6.21 mi).
Where is km to mi conversion used?
Length conversions come up constantly when metric and imperial systems meet: checking your height for a visa or medical form, comparing screen and TV sizes, buying furniture or clothes from another country, reading product dimensions on international shopping sites, and following DIY or engineering drawings.
What are kilometers?
A kilometer equals 1,000 meters. It is used for road distances and running races in almost every country outside the US and UK.
What are miles?
A mile is 5,280 feet, exactly 1,609.344 meters. It is the road distance unit in the US and UK.
Kilometers to miles conversion table
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.2427 |
| 3 | 1.8641 |
| 4 | 2.4855 |
| 5 | 3.1069 |
| 6 | 3.7282 |
| 7 | 4.3496 |
| 8 | 4.971 |
| 9 | 5.5923 |
| 10 | 6.2137 |
| 12 | 7.4565 |
| 15 | 9.3206 |
| 20 | 12.4274 |
| 25 | 15.5343 |
| 30 | 18.6411 |
| 50 | 31.0686 |
| 75 | 46.6028 |
| 100 | 62.1371 |
Frequently asked questions
How many miles are in 1 kilometer?
1 kilometer = 0.621371 miles (1 km = 0.621371 mi).
How many kilometers are in 1 mile?
1 mile = 1.6093 kilometers (1 mi = 1.6093 km).
What is 10 km in miles?
10 km = 6.2137 mi.
What is 100 km in miles?
100 km = 62.1371 mi.
Is the km to mi conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm, so every imperial–metric length factor (inch, foot, yard, mile) is exact. Results here are rounded only for display.
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