Miles to Kilometers (mi to km) Converter

Enter miles to get kilometers.

1 mile = 1.609344 km exactly

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1.609344
Try:
Step-by-stepmi โ†’ km
11 mi = 1.609344 kmformula
21 ร— 1.609344substitute
31.609344 kmresult
URLiunitconverter.com/length/miles-to-kilometers?value=1Open
1 mi in every unit
mm
Millimeter
1 mm = 0.1 cm
1,609,344 mm
cm
Centimeter
1 cm = 10 mm
160,934.4 cm
m
Meter
SI base unit
1,609.344 m
km
Kilometer
1 km = 1,000 m
1.609344 km
in
Inch
1 in = 2.54 cm exactly
63,360 in
ft
Foot
1 ft = 12 in
5,280 ft
yd
Yard
1 yd = 3 ft
1,760 yd
mi
Mile
1 mi = 5,280 ft
1 mi

Miles to Kilometers Formula

kilometers = miles ร— 1.609344

One mile is 1.609344 kilometers, by definition, so the conversion is exact. For example, 13.1 mi ร— 1.609344 = 21.082406 km.

Statute Miles and Nautical Miles

The mile on road signs is the statute mile: 5,280 feet or 1,760 yards, which is exactly 1,609.344 meters. Ships and aircraft use the nautical mile instead, fixed at 1,852 meters, which is about 15% longer.

UnitKilometersStatute miles
1 statute mile1.609344 km1 mi
1 nautical mile1.852 km1.1508 mi
1 kilometer1 km0.6214 mi

Converting Without a Calculator

Multiplying by 1.6 is the usual mental shortcut. It is about 0.6% low, which is fine for road distances. Multiplying by 1.61 gets within 0.05% of the exact answer.

Milesร— 1.6 shortcutExact
10 mi16 km16.09 km
26.2 mi41.9 km42.16 km
60 mi96 km96.56 km
100 mi160 km160.93 km
250 mi400 km402.34 km

Miles to Kilometers Table

Miles (mi)Kilometers (km)
0.25 mi0.4023 km
0.5 mi0.8047 km
1 mi1.6093 km
2 mi3.2187 km
3 mi4.828 km
5 mi8.0467 km
10 mi16.0934 km
13.1 mi21.0824 km
15 mi24.1402 km
20 mi32.1869 km
26.2 mi42.1648 km
30 mi48.2803 km
50 mi80.4672 km
100 mi160.9344 km
250 mi402.336 km
500 mi804.672 km

Common Questions

How many kilometers are in a mile?
Exactly 1.609344 km.
How many kilometers is a marathon?
A marathon is officially 42.195 km. The usual "26.2 miles" is rounded: the exact figure is 26.219 miles.
Why is a mile 5,280 feet?
In 1593 the English Parliament set the mile at 8 furlongs, and a furlong was 660 feet. 8 ร— 660 = 5,280.
Does this converter use nautical miles?
No, it uses statute (land) miles. A nautical mile is 1.852 km.