Kilometers to Nautical Miles Converter

How to convert Kilometers to Nautical Miles

To convert Kilometers to Nautical Miles, multiply the value in Kilometers by 0.5399568. For example, 5 km = 2.699784 nmi.

If you need to convert from Kilometers to Nautical Miles, the key figure to remember is that one Kilometers equals 0.5399568 Nautical Miles. This page gives you a live calculator, a full reference table, and the underlying formula so you can convert km to nmi with complete confidence.

Length conversions are among the most common everyday calculations — whether you're following a recipe from another country, planning a DIY project, reading a map, or working with international product specifications.

Understanding Kilometers and Nautical Miles

Length and distance units split broadly into two systems: the metric system (meters, centimeters, kilometers) used by most of the world, and the imperial/US customary system (inches, feet, yards, miles) still standard in the United States. Engineering, construction, aviation, and shipping each rely on specific units — nautical miles for sea and air navigation, feet for altitude, millimeters for precision manufacturing.

How accurate is this conversion?

All length conversions on this page are exact by international agreement. Since 1959 the inch has been defined as exactly 2.54 centimeters, which makes every imperial-to-metric length conversion precise rather than approximate.

All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.

Quick reference: common Kilometers to Nautical Miles values

The most frequently searched conversions are 1 Kilometers = 0.5399568 Nautical Miles, 5 Kilometers = 2.699784 Nautical Miles, 10 Kilometers = 5.399568 Nautical Miles, and 100 Kilometers = 53.99568 Nautical Miles. The full table further down covers every common value, and the calculator handles any number you need in between.