Miles to Kilometers Converter (mi to km)

Type a value in miles to see it in kilometers instantly.

1 mile (mi) = 1.609344 kilometers (km)

1 kilometer (km) = 0.621371192 miles (mi)

26.2 mi = 42.1648128 km

Open in the full converter to compare with other length units.

How to convert miles to kilometers

Multiply the number of miles by 1.609344.

km = mi × 1.609344

Example: 26.2 mi × 1.609344 = 42.1648 km

Quick estimate: multiply miles by 1.6. A US speed limit of 65 mph is about 105 km/h; a 26.2-mile marathon is 42.195 km.

mi to km conversion table

Miles (mi)Kilometers (km)
0.25 mi0.402336 km
0.5 mi0.804672 km
1 mi1.60934 km
2 mi3.21869 km
3 mi4.82803 km
4 mi6.43738 km
5 mi8.04672 km
6 mi9.65606 km
10 mi16.0934 km
13.1 mi21.0824 km
15 mi24.1402 km
20 mi32.1869 km
25 mi40.2336 km
26.2 mi42.1648 km
30 mi48.2803 km
50 mi80.4672 km
60 mi96.5606 km
70 mi112.654 km
100 mi160.934 km
200 mi321.869 km
500 mi804.672 km

About the units

Mile (mi)

The international mile is defined as exactly 1,609.344 meters, or 5,280 feet. It is used for road distances and speed limits in the United States and the United Kingdom.

Kilometer (km)

A kilometer (kilometre) is 1,000 meters. It is the standard unit for road distances and running races in almost every country outside the United States and the United Kingdom.

Frequently asked questions

How many kilometers are in 1 mile?

1 mile equals 1.609344 kilometers.

How do I convert miles to kilometers?

Multiply the number of miles by 1.609344. For example, 26.2 mi × 1.609344 = 42.1648 km.

How many miles are in 1 kilometer?

1 kilometer equals 0.621371192 miles.

How many km is a marathon?

A marathon is 26.2 miles, or exactly 42.195 kilometers.

Why is a mile 1.609344 km?

In 1959 the US, UK and other Commonwealth countries agreed on the international yard of exactly 0.9144 m. A mile is 1,760 yards, which makes it exactly 1,609.344 m.

Related conversions

Background reading: Metric vs. Imperial.