📏 Kilometers to Nautical miles Converter
Convert kilometers (km) to nautical miles (nmi) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 kilometer (km) = 0.5399568 nautical miles (nmi). Formula: nmi = km × 0.5399568.
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Kilometers to Nautical miles Converter inputs
Result
Kilometers to Nautical miles conversion table
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 0.1 km | 0.05399568 nmi |
| 0.5 km | 0.2699784 nmi |
| 1 km | 0.5399568 nmi |
| 2 km | 1.0799136 nmi |
| 3 km | 1.6198704 nmi |
| 5 km | 2.699784 nmi |
| 10 km | 5.399568 nmi |
| 20 km | 10.799136 nmi |
| 25 km | 13.49892 nmi |
| 50 km | 26.99784 nmi |
| 100 km | 53.99568 nmi |
| 1,000 km | 539.9568 nmi |
Other length conversions
km to mmkm to cmkm to mkm to inkm to ftkm to ydkm to mikm to nmi
How to convert kilometers to nautical miles
Multiply the number of kilometers by 0.5399568 to get nautical miles: nmi = km × 0.5399568.
Example: 5 km = 2.699784 nmi.
The kilometer (km) and the nautical mile (nmi) are both units of length. Need the opposite direction? Use the nmi to km converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many nautical miles are in a kilometer?
1 kilometer = 0.5399568 nautical miles.
How do I convert kilometers to nautical miles?
Use the formula nmi = km × 0.5399568. For example, 5 km = 2.699784 nmi.
How do I convert nautical miles back to kilometers?
1 nautical mile = 1.852 kilometers. Use the nmi to km converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.