QuickUnit

Length

Kilometer vs Mile vs Nautical Mile

Quick reference table for unit conversions with key differences.

Reference Table

KilometerkmMilemiNautical Milenmi
0.50.31068560.2699784
10.62137120.5399568
21.2427421.079914
53.1068562.699784
106.2137125.399568
2515.5342813.49892
5031.0685626.99784
10062.1371253.99568
500310.6856269.9784
1000621.3712539.9568

About These Units

km

Kilometer

Symbol: km

The kilometer equals 1,000 meters. Used for measuring distances between cities, roads, and geographic features.

Used in: Worldwide (except US, UK for roads)

mi

Mile

Symbol: mi

The mile equals 1,609.344 meters. Used for road distances and speed limits in the US and UK.

Used in: United States, United Kingdom

nmi

Nautical Mile

Symbol: nmi

The nautical mile equals 1,852 meters. Used in maritime and air navigation worldwide.

Used in: Worldwide (maritime, aviation)

Key Differences

  • 1 km is equal to 0.6213712 mi.
  • 1 km is equal to 0.5399568 nmi.
  • 1 mi is equal to 0.8689762 nmi.

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