Mile to Kilometer Converter
One Mile equals 1.609344 Kilometer (1 mi = 1.609344 km). Multiply a Mile value by 1.609344 to get the equivalent in Kilometer. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
km = mi × 1.609344
Multiply the Mile value by 1.609344 to get the equivalent value in Kilometer.
Example Conversions
1 Mile (mi)
1.609344 Kilometer (km)
5 Mile (mi)
8.04672 Kilometer (km)
10 Mile (mi)
16.09344 Kilometer (km)
25 Mile (mi)
40.2336 Kilometer (km)
100 Mile (mi)
160.9344 Kilometer (km)
Conversion Table
| Mile (mi) | Kilometer (km) |
|---|---|
| 0.1 | 0.1609344 |
| 0.5 | 0.804672 |
| 1 | 1.609344 |
| 2 | 3.218688 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 250 | 402.336 |
| 500 | 804.672 |
| 1000 | 1609.344 |
How to Convert Manually
Use these steps to convert Mile values to Kilometer without the calculator.
- Write down the value in Mile (mi) that you want to convert.
- Multiply that value by 1.609344.
- For example, 10 Mile × 1.609344 = 16.09344 Kilometer.
- Label the result as Kilometer (km).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Mile and one Kilometer.
About Mile and Kilometer
The mile is defined as exactly 1,609.344 meters (5,280 feet) under the 1959 international yard and pound agreement. It remains the road-distance unit of the US and UK. The kilometer is 1,000 meters, the standard unit for road distances, maps, and geography in most of the world. Road signs, running races, and vehicle odometers outside the US and UK all use it. One Mile equals 1.609344 Kilometer (1 mi = 1.609344 km). Mile to Kilometer conversion comes up most often in US and UK road distances and speed limits and in marathon and running pace calculations, typically when figures need restating for road distances and signage outside the US.
Precision and Rounding: Length factors between metric and imperial units are exact by definition (1 ft = 0.3048 m since 1959), so any rounding error comes from display precision, not the factor. Two or three decimal places suit carpentry and DIY work; machining and surveying often require four or more.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Mile equals 24.14016 Kilometer.
15 mi × 1.609344 = 24.14016 km
FAQ
How do I convert Mile to Kilometer?
Multiply the Mile value by 1.609344 to get the equivalent value in Kilometer.
What is the formula for Mile to Kilometer?
The formula is km = mi × 1.609344.
How many Kilometer are in 1 Mile?
1 Mile equals 1.609344 Kilometer.
Can I convert Kilometer back to Mile?
Yes. 1 Kilometer equals 0.6213711922 Mile, and the related converter can reverse the calculation.
What are common names for Mile and Kilometer?
Mile is shown as mi and may also be searched as miles. Kilometer is shown as km and may also be searched as kilometre, kilometers, kilometres.
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