Convert MILES to KM, Free
Type any MILES value and see the KM result instantly. No button press needed.
How to convert MILES to KM
Miles and kilometers measure the same thing by different conventions: road distances, running events, aviation range, and weather reports all switch between these units depending on where you are. One mile equals exactly 1.60934 kilometers, so converting is a multiplication in either direction. The conversion is essential for international travel, GPS setup, running training plans, and any speed or distance comparison across imperial and metric countries.
The result appears in your browser the moment you type. No server call is needed; the formula is applied locally in JavaScript.
Enter the distance in miles
Type the number of miles. Any decimal works: 0.5, 3.1 (5K race), 26.2 (marathon), 100.
Read the kilometer result
The converter multiplies by 1.60934 and shows the result. A half marathon (13.1 miles) = 21.09 km.
Copy the value
Copy the kilometer value for your map, training log, or route plan.
Convert in reverse
Switch to km-to-miles when starting from a metric distance.
Frequently asked questions
How many kilometers in a mile?
Exactly 1.609344 km. Usually rounded to 1.60934 or 1.6 for quick mental math.
What is 5 miles in kilometers?
5 x 1.60934 = 8.047 km.
What is a 10K in miles?
10 / 1.60934 = 6.214 miles.
How far is a marathon in kilometers?
26.2188 miles x 1.60934 = 42.195 km. The marathon distance is defined as 42.195 km.
Which countries use miles instead of kilometers?
The United States, UK (for road distances), Liberia, and Myanmar still use miles. Most of the rest of the world uses kilometers.