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Miles to Kilometers Converter

Convert miles (mi) to kilometers (km), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Convert a length from one unit to another. For inches, feet and yards you also get feet and inches with a tape-measure fraction.

About valueEnter a number, a fraction such as 3/8, a mixed number such as 1 3/8, or simple arithmetic such as 2*3.
About to unitUnit to convert into.
About round inches to nearestSmallest inch fraction used when showing feet and inches.
Result
Result
1.609344 km
yards
1760
feet
5280
inches
63360
meters
1609.344
centimeters
160934.4
millimeters
1609344
micrometers
1609344000
nanometers
1609344000000
light-years
1.70107795023 × 10^-13
US survey feet
5279.98944

1 mi = 1.609344 km

Show the working
  1. 1 mi = 1.609344 km
  2. 1 × 1.609344 = 1.609344 km

How to convert miles to kilometers

1 mi = 1.609344 km, so multiply by 1.609344 to go from miles to kilometers. Going the other way, 1 km = 0.621371192237 mi.

km = mi × 1.609344
mi = km × 0.621371192237

Worked example:

1 mi = 1.609344 km
5 × 1.609344 = 8.04672 km

Miles to kilometers table

MilesKilometers
1 mi1.609344 km
2 mi3.218688 km
3 mi4.828032 km
4 mi6.437376 km
5 mi8.04672 km
6 mi9.656064 km
7 mi11.265408 km
8 mi12.874752 km
9 mi14.484096 km
10 mi16.09344 km
15 mi24.14016 km
20 mi32.18688 km
25 mi40.2336 km
30 mi48.28032 km
40 mi64.37376 km
50 mi80.4672 km
75 mi120.7008 km
100 mi160.9344 km
250 mi402.336 km
500 mi804.672 km
1000 mi1609.344 km

About the units

Miles (mi)
Miles, a US customary unit. Definition: NIST Handbook 44 Appendix C (international yard and pound, 1959).
Kilometers (km)
Kilometers, a metric unit. Definition: BIPM SI Brochure (SI prefixes).

Formula version 0.1.0Reviewed