Convert KM to Miles

Convert kilometres to miles for distance and speed.

Direction

Value in kilometre (km)

Decimal places

42.195 km in mile

26.2188 mi

Conversion factor

1 km = 0.62137119 mi

Reverse factor

1 mi = 1.609344 km

mi = km × 0.62137119 — 42.195 × 0.62137119 = 26.2188

The same factor converts speed: 100 km/h is 62.14 mph. A marathon is 42.195 km, or 26.219 miles.

Quick reference table.
km	mi
0.5	0.3107
1	0.6214
2	1.2427
3	1.8641
4	2.4855
5	3.1069
10	6.2137
15	9.3206
20	12.4274
25	15.5343
30	18.6411
40	24.8548
50	31.0686
75	46.6028
100	62.1371
150	93.2057
200	124.2742
500	310.6856
1000	621.3712

What does KM to Miles Converter do?

Convert kilometres to miles using the exact 1.609344 factor, with a speed mode that converts km/h to mph and a running pace mode for race distances.

How to Use KM to Miles Converter

1
Enter a distance in kilometresOr switch to speed mode.
2
Read the milesShown to your chosen precision.
3
Check the referencesRace distances and speed limits.

Key Features

Exact conversion: 1 mile = 1.609344 km
Speed mode converting km/h to mph
Running distance references: 5K, 10K, half and full marathon
Reference table from 1 km to 200 km
Two-way conversion built in

Frequently Asked Questions

How many miles is 1 km?

0.621371 miles. For quick arithmetic, multiply by 0.6 and add a little — or remember that 8 km is almost exactly 5 miles.

How many miles is a marathon?

26.219 miles, from the official 42.195 km. The odd distance comes from the 1908 London Olympics, where the course was extended to finish in front of the royal box.