Convert mile to kilometre

1 mile = 1.609344 kilometres. Enter any value below for an exact conversion.

Value in miles

1 mi =

1.609344 km

kilometres

Need the reverse? Convert kilometre to mile →

Formula

1 mile = 1.609344 kilometres
kilometre = miles × 1.609344
mile = kilometres × 0.6213712

mile to kilometre conversion table

1 mi1.609344 km

2 mi3.218688 km

3 mi4.828032 km

5 mi8.04672 km

10 mi16.09344 km

20 mi32.18688 km

25 mi40.2336 km

50 mi80.4672 km

100 mi160.9344 km

1000 mi1609.344 km

About converting miles to kilometres

Converting miles to kilometres is essential for drivers and runners moving between the US or UK and metric countries. Road distances, race lengths (a 26.2-mile marathon is about 42.2 km), and car odometers all rely on this conversion. One mile equals exactly 1.609344 km.

Method & sources

Conversions use exact legal definitions rather than rounded approximations: 1 inch = 2.54 cm and 1 pound = 0.45359237 kg (fixed by the 1959 international yard and pound agreement), 1 mile = 1.609344 km, and 1 US liquid gallon = 3.785411784 litres. Temperatures convert with °F = °C × 9⁄5 + 32 and K = °C + 273.15. Results are rounded only for display.

Page last updated: October 1, 2026

Frequently asked questions

How many kilometres are in a mile?

One mile equals 1.609344 kilometres. So 10 miles is 16.09344 kilometres. Use the converter above for any value.

What is the formula to convert miles to kilometres?

1 mile = 1.609344 kilometres kilometre = miles × 1.609344 mile = kilometres × 0.6213712

Is the mile-to-kilometre conversion exact?

Yes. The conversion factor between miles and kilometres is defined exactly, so results are precise — only rounded for display.

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