UnitSnapMiles 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.
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.
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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
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated