Convert Kilometers to Miles
Convert Kilometers to Miles instantly with the exact formula (1 km = 0.621371 mi), a quick table and the reverse conversion.
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How to use Kilometers to Miles Converter
- 1
Open Kilometers to Miles Converter on this page. It loads right in your browser.
- 2
Add your file, text or values and adjust the settings.
- 3
Copy the result or download it. Nothing is uploaded or stored.
About this tool
This converter turns Kilometers into Miles as you type. One kilometer equals 0.621371 mi, so the result is exact, not rounded guesswork. It is handy for heights, screen sizes, furniture, clothing, DIY projects and maps.
How to convert Kilometers to Miles
Multiply the value in Kilometers by 0.621371. To convert Kilometers to Miles, use the formula below.
mi = km × 0.621371
Worked example
12 km × 0.621371 = 7.4565 mi
Quick mental estimate
For a rough figure in your head, multiply by about 0.62: 12 km ≈ 7.44 mi. Use the converter when you need the exact value.
Kilometers to Miles table
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.6214 |
| 2 | 1.2427 |
| 5 | 3.1069 |
| 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 |
Quick reference
- 2 km = 1.2427 mi
- 10 km = 6.2137 mi
- 15 km = 9.3206 mi
- 25 km = 15.5343 mi
- 50 km = 31.0686 mi
- 100 km = 62.1371 mi
Where Kilometers and Miles are used
The metric system (millimeters, centimeters, meters, kilometers) is used almost everywhere, while the United States, and partly the UK, still use inches, feet, yards and miles for everyday lengths. Product listings, construction plans and sports often mix both, which is why conversions are needed so often.
Tips
- Use the swap button to convert Miles back to Kilometers.
- Choose 0 to 6 decimals; the full-precision value is used internally.
- The side panel also shows the value in every other unit of the same type.
Why use this converter
It is free, needs no sign-up and runs entirely in your browser, so it keeps working even offline once the page is loaded. Need the opposite? Use the Miles to Kilometers converter or the full unit converter.
Features
- Instant Kilometers to Miles conversion as you type
- Exact factor: 1 km = 0.621371 mi
- Quick conversion table of common values
- Swap button for Miles to Kilometers
- Choose 0 to 6 decimal places
- Works offline in your browser
Frequently asked questions
How many Miles are in one kilometer?
One kilometer equals 0.621371 mi.
How do I convert Kilometers to Miles?
Multiply the number of Kilometers by 0.621371. For example, 12 km = 7.4565 mi.
What is 25 km in Miles?
25 km equals 15.5343 mi.
Is the conversion exact?
Yes. The tool uses the internationally defined conversion factor and only rounds the displayed result to the decimals you choose.