Kilometers to Miles (km to mi) Converter

Enter kilometers to get miles. Handy for race distances, road trips and running watches set to the other unit.

1 km โ‰ˆ 0.621371 mi (1 mi = 1.609344 km exactly)

From
To
0.6213711922
Try:
Step-by-stepkm โ†’ mi
11 mi = 1.609344 kmformula
21 รท 1.609344substitute
3โ‰ˆ 0.6213711922 miresult
URLiunitconverter.com/length/kilometers-to-miles?value=1Open
1 km in every unit
mm
Millimeter
1 mm = 0.1 cm
1,000,000 mm
cm
Centimeter
1 cm = 10 mm
100,000 cm
m
Meter
SI base unit
1,000 m
km
Kilometer
1 km = 1,000 m
1 km
in
Inch
1 in = 2.54 cm exactly
39,370.079 in
ft
Foot
1 ft = 12 in
3,280.8399 ft
yd
Yard
1 yd = 3 ft
1,093.6133 yd
mi
Mile
1 mi = 5,280 ft
0.62137119 mi

Kilometers to Miles Formula

miles = kilometers รท 1.609344

One mile is 1.609344 kilometers, by definition, so the conversion is exact. For example, 10 km รท 1.609344 = 6.213712 mi.

Race Distances in Miles

Road races are named in kilometers almost everywhere, including in the US, but pace is often tracked in minutes per mile.

RaceKilometersMiles
5K5 km3.11 mi
10K10 km6.21 mi
Half marathon21.0975 km13.11 mi
Marathon42.195 km26.22 mi
50K ultra50 km31.07 mi
100K ultra100 km62.14 mi

The Fibonacci Shortcut

Neighbouring numbers in the Fibonacci sequence (3, 5, 8, 13, 21, 34โ€ฆ) have a ratio close to 1.618, which is very near the 1.609 kilometers in a mile. So each number in kilometers is roughly the previous number in miles.

KilometersShortcut (miles)Exact (miles)
5 kmโ‰ˆ 3 mi3.11 mi
8 kmโ‰ˆ 5 mi4.97 mi
13 kmโ‰ˆ 8 mi8.08 mi
21 kmโ‰ˆ 13 mi13.05 mi
34 kmโ‰ˆ 21 mi21.13 mi

Kilometers to Miles Table

Kilometers (km)Miles (mi)
1 km0.6214 mi
2 km1.2427 mi
3 km1.8641 mi
5 km3.1069 mi
8 km4.971 mi
10 km6.2137 mi
15 km9.3206 mi
20 km12.4274 mi
25 km15.5343 mi
30 km18.6411 mi
40 km24.8548 mi
50 km31.0686 mi
80 km49.7097 mi
100 km62.1371 mi
200 km124.2742 mi
500 km310.6856 mi

Common Questions

How many miles are in a kilometer?
1 km is about 0.621371 miles, or a little under 5/8 of a mile.
Is a 5K exactly 3 miles?
No. 5 km is 3.107 miles, so a 5K is slightly longer than 3 miles.
Are nautical miles the same as miles?
No. A nautical mile, used at sea and in aviation, is 1.852 km. The ordinary (statute) mile this converter uses is 1.609344 km.
How do I convert km to miles in my head?
Multiply by 0.6, then add a little. 0.6 alone is about 3.4% low; multiplying by 5 and dividing by 8 is closer (0.625, about 0.6% high).