kilometer to nautical mile
Convert kilometer (km) to nautical mile (nmi). Use an editable length converter, conversion formula, and reference table.
1 km = 0.5399568035 nmi
Conversion formula
One kilometer equals 0.5399568035 nautical mile. Multiply your value in kilometer by this factor to get nautical mile. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 kilometer:5 × 0.5399568035 = 2.699784017 nmi
Conversion table
| kilometer (km) | nautical mile (nmi) |
|---|---|
| 0.01 | 0.005399568035 |
| 0.1 | 0.05399568035 |
| 1 | 0.5399568035 |
| 2 | 1.079913607 |
| 5 | 2.699784017 |
| 10 | 5.399568035 |
| 25 | 13.49892009 |
| 50 | 26.99784017 |
| 100 | 53.99568035 |
| 1000 | 539.9568035 |
About these measurements
Length measures the distance between two points.
The base reference used here is the meter. One kilometer is 1,000 base units; one nautical mile is 1,852 base units.
Important distinctions
International feet and inches are used. Survey feet are not included.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert km to nmi?
Multiply the quantity in km by 0.5399568035. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the nautical mile to kilometer converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
