Kilometer to Mile Converter
Convert Kilometer (km) to Mile (mi) instantly. Free online length conversion tool.
1 km
0.621371 mi
1 mi = 1.609344 km
Kilometer to Mile Conversion Table
| Kilometer (km) | Mile (mi) |
|---|---|
| 1 km | 0.6214 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 25 km | 15.5343 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
| 250 km | 155.3428 mi |
| 500 km | 310.6856 mi |
| 1000 km | 621.3712 mi |
How to Convert Kilometer to Mile
To convert Kilometer (km) to Mile (mi), multiply the value by the conversion factor. 1 km = 0.621371 mi.
Use our free online converter above for instant, accurate results. No signup required.
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Kilometer to Mile — FAQ
How accurate is the Kilometer to Mile conversion?
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The conversion uses an exact or high-precision factor sourced from international standards (BIPM/NIST). Results are computed with 64-bit floating-point arithmetic and displayed to up to 10 significant figures to minimize rounding errors for all practical purposes.
Can I convert multiple values at once?
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The conversion table above shows common values automatically. For bulk conversions, use the interactive length converter where you can type any value and see the result instantly. The converter supports all units in the length category, not just km and mi.
Is this converter free to use?
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Yes. This converter is completely free with no account or sign-up required. It runs entirely in your browser and works on desktop, tablet, and mobile devices.
Where does the conversion factor between km and mi come from?
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Conversion factors are sourced from definitions published by the International Bureau of Weights and Measures (BIPM) and the US National Institute of Standards and Technology (NIST). Many factors are exact treaty definitions, such as the inch being defined as exactly 2.54 centimeters.
What other length units can I convert?
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The Length converter supports all common units in this category. Use the interactive converter to explore all available units and switch between any pair instantly.