Miles to Kilometers Converter (mi to km)
1 mi = 1.609344 km exactly. Convert miles to kilometers for road trips, odometer readings, motor races and triathlons, with a km to mi chart.
km = mi × 1.609344
Mile (mi): The international (statute) mile is exactly 1609.344 metres, or 5280 feet. It is the unit for road distances and speed limits in the United States and the United Kingdom.
Kilometer (km): The kilometre is 1,000 metres. One international mile is exactly 1.609344 km; to convert kilometres to miles, divide by 1.609344.
| Mile (mi) | Kilometer (km) |
|---|---|
| 1 | 1.609344 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.9344 |
Miles are the road unit in the United States and the United Kingdom, so trip plans, rental-car mileage and odometer readings from those countries need converting for anyone who thinks in kilometers. American motor racing and the Ironman triathlon also keep their distances in miles. The international mile is exactly 1.609344 km, the factor behind every figure on this page.
An odometer or trip meter converts the same way, whether it shows total miles or tenths of a mile. Speeds follow the same factor, so miles per hour become kilometers per hour by the identical multiplication; the speed converter also covers knots and meters per second.
How to use this tool
- Type a value in the Mile box to see it in kilometers, or type in the Kilometer box to convert the other way.
- Press ⇄ to swap the two units, or Load example for a typical value.
- Check the charts below for common values; for other units, open the Length converter.
Formula
km = mi × 1.609344
mi = km ÷ 1.609344
Both factors come from exact definitions: 1 kilometer = 0.621371192237 miles and 1 mile = 1.609344 kilometers (shown to 12 significant digits).
Example
Two conversions worked with the same factors the converter uses:
250 mi × 1.609344 = 402.336 km
160 km × 0.621371192237 ≈ 99.4194 mi
Mile to Kilometer chart
Common values from miles to kilometers, rounded to four decimal places.
| Mile (mi) | Kilometer (km) |
|---|---|
| 0.25 | 0.4023 |
| 0.5 | 0.8047 |
| 1.5 | 2.414 |
| 2.4 | 3.8624 |
| 4 | 6.4374 |
| 6 | 9.6561 |
| 7 | 11.2654 |
| 8 | 12.8748 |
| 12 | 19.3121 |
| 13.1 | 21.0824 |
| 18 | 28.9682 |
| 26.2 | 42.1648 |
| 35 | 56.327 |
| 45 | 72.4205 |
| 85 | 136.7942 |
| 112 | 180.2465 |
| 120 | 193.1213 |
| 150 | 241.4016 |
| 250 | 402.336 |
| 300 | 482.8032 |
| 400 | 643.7376 |
| 600 | 965.6064 |
| 1,000 | 1,609.34 |
| 2,500 | 4,023.36 |
| 3,000 | 4,828.03 |
Kilometer to Mile chart
The reverse direction for values people often look up.
| Kilometer (km) | Mile (mi) |
|---|---|
| 4 | 2.4855 |
| 6 | 3.7282 |
| 12 | 7.4565 |
| 16 | 9.9419 |
| 21.1 | 13.1109 |
| 35 | 21.748 |
| 45 | 27.9617 |
| 75 | 46.6028 |
| 110 | 68.3508 |
| 130 | 80.7783 |
| 160 | 99.4194 |
| 400 | 248.5485 |
| 800 | 497.097 |
| 1,600 | 994.1939 |
| 2,000 | 1,242.74 |
Distances that are set in miles
| Event or route | Mile (mi) | Kilometer (km) |
|---|---|---|
| Indianapolis 500 race distance | 500 | 804.672 |
| One lap of the Indianapolis Motor Speedway | 2.5 | 4.0234 |
| Ironman triathlon swim | 2.4 | 3.8624 |
| Ironman triathlon bike leg | 112 | 180.2465 |
| Ironman run, a marathon rounded to 26.2 mi | 26.2 | 42.1648 |
| Army Ten-Miler road race | 10 | 16.0934 |
| Daytona 500 race distance | 500 | 804.672 |
| New-car warranty, a common 36,000-mile term | 36,000 | 57,936.38 |
Quick mental estimate
Add six tenths to the miles: 50 mi → 50 + 30 = 80 km, while the exact figure is 80.4672 km. The shortcut multiplies by 1.6 instead of 1.609344, so it runs about 0.6% low, roughly half a kilometer short on every 50 miles.
Use the converter or the charts when the exact figure matters.
The two units
Mile (mi): The international (statute) mile is exactly 1609.344 metres, or 5280 feet. It is the unit for road distances and speed limits in the United States and the United Kingdom.
Kilometer (km): The kilometre is 1,000 metres. One international mile is exactly 1.609344 km; to convert kilometres to miles, divide by 1.609344.
Frequently asked questions
Is a mile longer than a kilometer?
Yes, about 1.6 times as long: 1 mi is 1.609344 km, while a kilometer is only about 0.62 of a mile. A sign saying 30 miles therefore means a little over 48 km of driving.
How many kilometers is a 5-mile race?
Exactly 8.04672 km. Five miles sits between the common 5K and 10K distances, and road races of that length are popular in the US and the UK.
Does a UK mile equal a US mile?
Yes. Both countries use the international mile of 5,280 ft. The old US survey mile was about 3.2 mm longer, a gap that only mattered in land surveying.
How precise is the result?
The converter uses the exact definitions above with browser floating-point arithmetic and shows up to 12 significant digits. The charts round to four decimal places for reading.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/mile-to-kilometer-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Miles to Kilometers Converter (mi to km). https://kakao.mobile/tools/mile-to-kilometer-converter/
“Miles to Kilometers Converter (mi to km).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/mile-to-kilometer-converter/.
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