Miles to kilometres (mi to km) for road and running distances

Convert miles to kilometres (× 1.609344 exactly), with a table from 1 to 1000 miles.

Frommile (mi)

Tokilometre (km)

1.61

Decimals2 decimals

Formula: km = mi × 1.609344

1 mi = 1.61 km

Common values: mile to kilometre

mi	km
1 mi	1.61 km
2 mi	3.22 km
3 mi	4.83 km
5 mi	8.05 km
10 mi	16.09 km
13.1 mi	21.08 km
26.2 mi	42.16 km
50 mi	80.47 km
100 mi	160.93 km
200 mi	321.87 km
500 mi	804.67 km
1,000 mi	1,609.34 km

Quick answers

1 mi to km: 1.609 km
5 mi to km: 8.05 km
26.2 mi to km: 42.16 km
50 mi to km: 80.47 km
70 mi to km: 112.65 km
100 mi to km: 160.93 km

How it works

Kilometres = miles × 1.609344, exactly (a mile is 1760 yards of 0.9144 m). 26.2 miles is 42.16 km, 100 miles is 160.93 km and a 3-mile walk is 4.83 km.

Use it for road distances in the US or UK, a running plan written in miles, or a car's odometer when comparing with metric service intervals. Speeds in mph convert with the same factor; there is a dedicated mph-to-km/h page with speed-limit values.

How to convert miles to kilometres

Formula: km = mi × 1.609344.

Multiply the miles by 1.609344. A mile is 1,760 yards and a yard is exactly 0.9144 m, so 1,760 × 0.9144 m = 1,609.344 m. Worked example for a 26.2-mile marathon: 26.2 × 1.609344 = 42.165 km (the official distance is 42.195 km).

For a quick estimate, multiply by 1.6 and add a little over half a percent: 60 mi → 96 + 0.6 ≈ 96.6 km (exact 96.56 km).

Kilometres to miles: the reverse direction, mi = km × 0.621371192237

mi to km chart

Each row is computed with the same exact factor as the converter above and rounded only for display.

Miles	Kilometres	Metres
0.25 mi	0.402 km	402 m
0.5 mi	0.805 km	805 m
1 mi	1.609 km	1,609 m
2 mi	3.219 km	3,219 m
3 mi	4.828 km	4,828 m
3.1 mi	4.989 km	4,989 m
5 mi	8.047 km	8,047 m
6.2 mi	9.978 km	9,978 m
10 mi	16.093 km	16,093 m
13.1 mi	21.082 km	21,082 m
20 mi	32.187 km	32,187 m
26.2 mi	42.165 km	42,165 m
30 mi	48.28 km	48,280 m
50 mi	80.467 km	80,467 m
60 mi	96.561 km	96,561 m
70 mi	112.654 km	112,654 m
100 mi	160.934 km	160,934 m
150 mi	241.402 km	241,402 m
200 mi	321.869 km	321,869 m
500 mi	804.672 km	804,672 m

Everyday miles-to-kilometres examples

A quarter-mile drag strip: 0.25 mi = 0.402 km.
A half marathon quoted in miles: 13.1 mi = 21.08 km.
A 70-mile drive between two UK cities: 70 mi = 112.65 km.
A 3-mile walk in a US fitness plan: 3 mi = 4.83 km.
A "century" bike ride: 100 mi = 160.93 km.

How to use it

Type the value in the first box; the converted value appears in the second box as you type.
Or type in the second box to convert the other way.
Use the Decimals menu to round, and the quick-reference table for common values.

Frequently asked questions

How many km is 1 mile?

Exactly 1.609344 km.

How do I convert miles to km in my head?

Multiply by 1.6: 50 mi → 80 km (exact 80.47). For more accuracy add 0.6% more.

How many km is a marathon?

42.195 km, which is 26.219 mi. It is usually quoted as 26.2 miles.

Do nautical miles convert the same way?

No. A nautical mile is 1.852 km. Choose "nautical mile" in the length converter for sea and air distances.

How many km is 70 miles?

70 mi = 112.65 km (70 × 1.609344). 70 mph is the same figure in km/h.