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Converters

Miles to KM Converter

Enter a distance in miles to get it in kilometres. One mile is exactly 1,609.344 metres, a definition agreed internationally, so the conversion carries no rounding error.

kilometres

1.61 km

1 mi converted · 1 mi = 1.61 km

Convert kilometres to miles

Common miles to kilometres values

Reference table converting common miles values to kilometres
mikm
11.61
23.22
3.14.99
58.05
1016.09
13.121.08
26.242.16
5080.47
100160.93

How to use this tool

  1. Enter the distance in miles.
  2. Read the result in kilometres, or use the reference table.

Formula and method

kilometres = miles × 1.609344

Worked examples

A 26.2 mile marathon

  1. 26.2 × 1.609344 = 42.164

42.16 km — the official distance is 42.195 km.

A 70 mph motorway limit

  1. 70 × 1.609344 = 112.65

About 113 km/h.

Notes and limitations

  • Multiplying by 1.6 is accurate to within 0.6%, which is fine for everyday estimates.
  • US and UK road miles are the same unit. The nautical mile, used at sea and in the air, is not.

Frequently asked questions

How many km is 1 mile?

1.609344 km exactly, usually rounded to 1.61.

How many km is a 5K in miles?

A 5K is already metric — it is 5 km, which is 3.107 miles.

How many km is 100 miles?

160.93 km.

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