Miles to Kilometers Converter (miles to km)

How to convert miles to kilometers

One mile equals 1.609344 kilometers, so to convert miles to kilometers you multiply by about 1.60934: km = miles * 1.60934. To go from kilometers to miles, divide by the same factor (or multiply by roughly 0.62137): miles = km / 1.60934. The converter above updates both directions live as you type.

Worked examples

• 1 mile = 1.61 km
• 5 miles = 8.05 km
• 10 miles = 16.09 km
• 26.2 miles (a marathon) = 42.2 km
• 60 mph ≈ 96.6 km/h

Running distances at a glance

Race distances move between the two systems constantly, which is why runners convert so often. A 5K is about 3.1 miles, a 10K about 6.2 miles, a half marathon (21.1 km) about 13.1 miles, and a full marathon (42.2 km) exactly 26.2 miles. Knowing these by heart helps you pace training runs whether your watch shows miles or kilometers.

Which countries use which?

The kilometer is the standard unit for distance in the vast majority of countries. The mile remains in everyday use mainly in the United States and the United Kingdom (for road distances and speed limits), plus a handful of others. This split is exactly why travellers and drivers crossing borders need a quick mental or digital conversion.