Kilometers to Miles
Kilometers to miles converter: multiply by 0.62137 (1 km = 0.62137 mi). Includes a reference table, sample calculations and the inverse ratio 1.6093.
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What one kilometer is worth in miles
The unit table behind the converter relates kilometers and miles through one ratio, and that ratio works out to 0.62137119. In other words, 1 km = 0.62137119 mi.
The ratio works in both directions: multiply by 0.62137119 to go from kilometers to miles, or multiply by 1.609344 to go from miles back to kilometers.
Quick lookup: kilometers in miles
Each of the 12 rows pairs an amount in kilometers with its equivalent in miles. Scale up or down by powers of ten, since the ratio 0.62137119 does not change.
| Kilometers (km) | Miles (mi) |
|---|---|
| 0.25 | 0.1553428 |
| 1 | 0.62137119 |
| 1.5 | 0.93205679 |
| 3 | 1.864113577 |
| 6 | 3.728227153 |
| 8 | 4.970969538 |
| 15 | 9.320567884 |
| 40 | 24.85484769 |
| 75 | 46.60283942 |
| 150 | 93.20567884 |
| 400 | 248.5484769 |
| 2,000 | 1,242.742384 |
Values in the mi column are shown the way the converter shows them, with a limited number of significant digits.
Worked examples for kilometers to miles
Example 1. Start with 420 km. Multiply 420 by 0.62137119 and the converter shows 260.9759007 mi.
Try 15 km as well. Multiplying by 0.62137119 gives 9.320567884 mi, which the reverse ratio 1.609344 maps back to 15 km.
Finally, convert 24 miles to kilometers: dividing by 0.62137119 gives 38.624256.
The reverse: miles to kilometers
To start from miles instead, open Miles to Kilometers. For that direction 1 mi = 1.609344 km, and its reference table is built around miles as the input.
For other combinations, the Length Converter offers every unit in one pair of dropdowns.
Other conversions in this family
These pages cover neighbouring unit pairs from the same converter.
Frequently asked questions
How many mi make up 1 km?
1 km = 0.62137119 mi in the converter's unit table. Multiplying by 10 gives 6.213711922 mi; multiplying by 100 gives 62.13711922 mi.
What is 1 mi in km?
One mile equals 1.609344 kilometers. Ten miles equal 16.09344 kilometers.
How do I convert 850 km to mi?
850 kilometers is 528.1655134 miles. The calculation is 850 multiplied by 0.62137119, rounded the way the widget rounds.
How does the converter round results?
The widget calculates with ordinary floating-point numbers and only rounds what it displays. Results of 1 or more show up to 10 significant digits, results below 1 show up to 8, and results from 1,000 upward show up to 6 decimal places with thousands separators. As an example, 0.123456789 km displays as 0.076712492 mi and 1,234.5678 km displays as 767.1248658 mi.
Where does the km to mi result come from?
Behind the scenes, kilometers and miles are each tied to the same base unit by a stored factor. The ratio of those factors, 0.62137119, is what turns an km value into a mi value.
What is the reverse of km to mi?
Reversing the pair: multiply by 1.609344, or equivalently divide by 0.62137119. The page titled "Miles to Kilometers" covers it, or you can press the swap button in the widget above. Example: 25 mi = 40.2336 km.
Learn more from an authoritative source:
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