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Miles to Kilometers

Convert miles to kilometres with the exact 1,609.344 m mile, a full table and standard race distances included, in your browser. Runs entirely in your browser — your numbers never leave this device.

Miles → Kilometres
42.164813 km
26.2 mi = 42.164813 km
Miles to kilometres — 1 to 100 miles
MilesKilometres
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
11 mi17.702784 km
12 mi19.312128 km
13 mi20.921472 km
14 mi22.530816 km
15 mi24.14016 km
16 mi25.749504 km
17 mi27.358848 km
18 mi28.968192 km
19 mi30.577536 km
20 mi32.18688 km
21 mi33.796224 km
22 mi35.405568 km
23 mi37.014912 km
24 mi38.624256 km
25 mi40.2336 km
26 mi41.842944 km
27 mi43.452288 km
28 mi45.061632 km
29 mi46.670976 km
30 mi48.28032 km
31 mi49.889664 km
32 mi51.499008 km
33 mi53.108352 km
34 mi54.717696 km
35 mi56.32704 km
36 mi57.936384 km
37 mi59.545728 km
38 mi61.155072 km
39 mi62.764416 km
40 mi64.37376 km
41 mi65.983104 km
42 mi67.592448 km
43 mi69.201792 km
44 mi70.811136 km
45 mi72.42048 km
46 mi74.029824 km
47 mi75.639168 km
48 mi77.248512 km
49 mi78.857856 km
50 mi80.4672 km
51 mi82.076544 km
52 mi83.685888 km
53 mi85.295232 km
54 mi86.904576 km
55 mi88.51392 km
56 mi90.123264 km
57 mi91.732608 km
58 mi93.341952 km
59 mi94.951296 km
60 mi96.56064 km
61 mi98.169984 km
62 mi99.779328 km
63 mi101.388672 km
64 mi102.998016 km
65 mi104.60736 km
66 mi106.216704 km
67 mi107.826048 km
68 mi109.435392 km
69 mi111.044736 km
70 mi112.65408 km
71 mi114.263424 km
72 mi115.872768 km
73 mi117.482112 km
74 mi119.091456 km
75 mi120.7008 km
76 mi122.310144 km
77 mi123.919488 km
78 mi125.528832 km
79 mi127.138176 km
80 mi128.74752 km
81 mi130.356864 km
82 mi131.966208 km
83 mi133.575552 km
84 mi135.184896 km
85 mi136.79424 km
86 mi138.403584 km
87 mi140.012928 km
88 mi141.622272 km
89 mi143.231616 km
90 mi144.84096 km
91 mi146.450304 km
92 mi148.059648 km
93 mi149.668992 km
94 mi151.278336 km
95 mi152.88768 km
96 mi154.497024 km
97 mi156.106368 km
98 mi157.715712 km
99 mi159.325056 km
100 mi160.9344 km

How it works

Kilometres = miles × 1.609344 (because 1 mile = 1,609.344 m exactly)
Miles to kilometres, including standard race distances
MilesKilometresContext
1 mi1.609 km
2 mi3.219 km
3.1 mi4.989 kmApprox. 5K
5 mi8.047 km
6.2 mi9.978 kmApprox. 10K
10 mi16.093 km
13.1 mi21.082 kmApprox. half marathon
20 mi32.187 km
26.2 mi42.165 kmApprox. marathon

Miles to kilometres is a multiplication by the exact definition of the mile: kilometres = miles × 1.609344. One mile is 1.609344 km, ten miles are 16.09344 km, and the table runs through the distances travellers and runners actually convert, including the race anchors — 3.1 miles is a 5K (4.9890 km, against the nominal 5 km) and 26.2 miles is 42.1648 km, just short of the marathon's exact 42.195 km.

That last pair shows why the exact factor matters. The marathon is defined as 42.195 km, which is 26.2188 miles; quoting it as 26.2 miles and converting back gives 42.1648 km, about 30 metres short. Nothing is wrong with the factor — the rounding happened in the quoted miles. Convert from the least-rounded figure you have, and round only for display.

Batch mode applies the factor to a pasted list, for a road-trip itinerary or a training log kept in miles. For speeds rather than distances, the same 1.609344 factor is at work in the Speed Converter, where 60 mph becomes 96.56 km/h.

Worked examples

A marathon approximation in kilometres

Input
26.2 miles to kilometres.
Working
26.2 × 1.609344 = 42.1648128.
Result
26.2 miles = 42.16 km (the exact marathon is 42.195 km)

A road-trip leg

Input
60 miles to kilometres.
Working
60 × 1.609344 = 96.56064.
Result
60 miles = 96.56 km

A 5K in kilometres

Input
3.1 miles to kilometres.
Working
3.1 × 1.609344 = 4.9889664.
Result
3.1 miles = 4.99 km

Frequently asked questions

How many kilometres are in a mile?

Exactly 1.609344, because the mile is defined as 1,609.344 metres. Every miles-to-kilometres conversion is a multiplication by that figure, and every kilometres-to-miles conversion is a division by it.

Why is 26.2 miles not exactly a marathon in kilometres?

Because 26.2 is itself rounded. 26.2 × 1.609344 = 42.1648 km, while the marathon distance is fixed at 42.195 km, which converts to 26.2188 miles. The 30-metre gap is the rounding in 26.2, not an error in either official distance.

What is a quick mental shortcut for miles to km?

Multiply by 1.6 for a close estimate — it understates by about 0.6%, so 50 miles gives 80 km against the exact 80.47 km — or add half and then a tenth of the original (50 + 25 + 5 = 80) for the same result. For anything recorded or compared, use the exact 1.609344 factor on this page.

Can I convert a list of mile distances together?

Yes. Batch mode multiplies every pasted line by 1.609344. That suits an itinerary, a set of stage distances or a season of training runs logged in miles that you need in kilometres for a metric plan.

Does the same factor convert mph to km/h?

Yes, because an hour is an hour in both systems: 1 mph = 1.609344 km/h exactly. So 70 mph is 70 × 1.609344 = 112.65 km/h. The Speed Converter handles that direction along with knots and metres per second.

Related tools

Kilometers to Miles→Convert kilometres to miles with the exact 1,609.344 m mile, a full table and race-distance examples for runners, in your browser.Open tool →Speed Converter⇄Convert miles per hour, kilometres per hour, knots and metres per second with exact factors and reference speeds, in your browser.Open tool →Length Converter⇄Convert metres, feet, inches, miles and kilometres with exact defined factors and a full reference table — instantly, in your browser.Open tool →Unit Converter⇄Convert between metric and imperial units across length, weight, temperature, volume and more — with exact defined factors, in your browser.Open tool →

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