Miles to Kilometers Calculator

Convert statute miles to kilometers for travel, running, cycling, maps, route planning, schoolwork, and international distance comparisons. The form has one input, Miles, and returns Kilometers rounded to two decimal places.

How to use this calculator

Enter a nonnegative distance in miles. The calculator multiplies by the mile-to-kilometer factor and displays the equivalent distance in km. For conversions among more length units, use the length converter. If your distance is part of a speed calculation, the speed converter may be the better next step.

Conversion formula

One mile equals approximately 1.609344 kilometers.

$kilometers = miles \times 1.609344$

For example, 10 miles is about 16.09 kilometers. To convert kilometers to miles, divide by 1.609344.

The form uses the rounded multiplier 1.60934, which gives the same practical result for everyday distances.

Worked example

For a 13.1 mile half marathon:

$13.1 \times 1.60934 = 21.082354$

The calculator displays 21.08 km.

Common values

For fuel comparisons that mix miles and kilometers, try the fuel economy converter.