Kilometers to nautical miles converter
Convert kilometers to nautical miles with an editable calculator, worked example, formula and reference table. Check the unit definitions before you convert.
Updated · How we checkUse a decimal point, such as 2.5. Enter a value in km; the result is in nmi.
Formula
Worked example
Convert 10 km to nmi:
10 km ≈ 5.399568035 nmi
Multiply your km value by the factor above. The calculator uses the full conversion factor before rounding the displayed answer.
Kilometers to nautical miles table
Reference values rounded to 10 significant digits. Use the converter above for other amounts.
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 0.1 | ≈ 0.05399568035 |
| 0.5 | ≈ 0.2699784017 |
| 1 | ≈ 0.5399568035 |
| 2 | ≈ 1.079913607 |
| 5 | ≈ 2.699784017 |
| 10 | ≈ 5.399568035 |
| 25 | ≈ 13.49892009 |
| 50 | ≈ 26.99784017 |
| 100 | ≈ 53.99568035 |
| 1000 | ≈ 539.9568035 |
Understanding kilometers
A kilometer contains 1,000 meters. Distance conversion does not estimate travel time or fuel use.
Understanding nautical miles
The international nautical mile is exactly 1,852 meters. It differs from the international land mile of 1,609.344 meters. Navigation distance and road distance must use the correct mile definition.
Precision and rounding
The calculator keeps decimal precision during the conversion. Displayed values use up to 10 significant digits; an approximation sign marks the reference results. Keep extra digits until your final measurement or purchase decision.
References
Definitions and method references. Example rates and prices on this page are editable assumptions.