Miles to Kilometers

1 mi = 1.609344 km

Miles to kilometers is used by runners following US training plans, drivers from the US or UK heading into metric countries, and anyone comparing distances across systems. The mile is still standard on roads in the United States and the United Kingdom. One international mile is exactly 1.609344 kilometers.

From

When you need to convert miles to kilometers

Converting a training run or half marathon distance for a metric race calendar
Planning a road trip abroad when route notes from home are in miles
Comparing a car odometer reading in miles with a metric service schedule
Translating hiking trail lengths from US park guides

How to convert miles to kilometers

km = mi × 1.609344

Example: 5 mi = 8.04672 km

Common distances in miles

Miles (mi)	Kilometers (km)
1 mi	1.609344 km
3 mi	4.828032 km
5 mi	8.04672 km
10 mi	16.09344 km
13.1 mi	21.08241 km
26.2 mi	42.16481 km
50 mi	80.4672 km
100 mi	160.9344 km

Tips for converting miles to kilometers

Multiply miles by 1.6 for a quick answer that is within about 1% of the exact value.
Another shortcut: multiply by 8 and divide by 5. It gives the same result as 1.6 and is easy to do mentally.
Nautical miles are different from statute miles. If the distance is from sea or air navigation, use the nautical mile conversion instead.

Miles to Kilometers conversion table

Miles (mi)	Kilometers (km)
1 mi	1.609344 km
2 mi	3.218688 km
3 mi	4.828032 km
4 mi	6.437376 km
5 mi	8.04672 km
6 mi	9.656064 km
7 mi	11.26541 km
8 mi	12.87475 km
9 mi	14.4841 km
10 mi	16.09344 km
15 mi	24.14016 km
20 mi	32.18688 km
25 mi	40.2336 km
30 mi	48.28032 km
40 mi	64.37376 km
50 mi	80.4672 km
75 mi	120.7008 km
100 mi	160.9344 km
250 mi	402.336 km
500 mi	804.672 km
1,000 mi	1,609.344 km

About the units

Miles: The mile is an imperial and US customary unit of length equal to 5,280 feet, or exactly 1,609.344 meters. It is used for road distances in the US and UK.

Kilometers: The kilometer is a metric unit of length equal to 1,000 meters, used for road distances and maps in most countries.

Frequently asked questions

How many kilometers are in 1 mile?

1 mile equals 1.609344 kilometers.

How many miles are in 1 kilometer?

1 kilometer equals 0.6213712 miles.

How do I convert miles to kilometers?

Use the formula km = mi × 1.609344.

What is 10 miles in kilometers?

10 miles equals 16.09344 kilometers.

Related conversions

Sources

Conversion factors use the exact definitions published by NIST and the BIPM, and are checked by automated tests against those definitions.

Last updated: October 17, 2026