📏 Length
km to nautical miles Converter
Convert km to nautical miles instantly with a reference conversion table.
Quick answer: To convert km to nautical miles, multiply by 0.539957. For example, 1 km = 0.539957 nautical miles. Use the calculator below for any value.
km to nautical miles
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Common conversions
| km | nautical miles |
|---|
Formula:
How to convert km to nautical miles
1
Enter your value
Type the number of km you want to convert into the left box. The result in nautical miles appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — nautical miles to km. Your current value carries across so you don't have to re-enter anything.
3
About km and nautical miles
km and nautical miles are common length measurements.
📊 Common conversions at a glance
| km | nautical miles |
|---|---|
| 1 | 0.54 |
| 5 | 2.7 |
| 10 | 5.4 |
| 20 | 10.8 |
| 50 | 27 |
| 100 | 54 |
Reviewed for 2026. km ↔ nautical miles conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.