Kilometer to Nautical Mile Converter
Convert Kilometer (km) to Nautical Mile (nmi) instantly. 1 km = 0.539957 nmi.
Length Converter
31 units available
1 km = 0.539957 nmi
Formula:
nmi = km × 0.5399568035With your value: 1 km = 0.5399568 nmi
How big is that?
Everyday references on a logarithmic scale, all expressed in kilometer so you can sanity-check the result.
Other Kilometer to Nautical Mile conversions
Kilometer to Nautical Mile Conversion Table
| Kilometer (km) | Nautical Mile (nmi) |
|---|---|
| 0.5 | 0.269978 |
| 1 | 0.539957 |
| 2 | 1.079914 |
| 5 | 2.699784 |
| 10 | 5.399568 |
| 15 | 8.099352 |
| 20 | 10.799136 |
| 25 | 13.49892 |
| 50 | 26.99784 |
| 100 | 53.99568 |
| 250 | 134.989201 |
| 500 | 269.978402 |
| 1000 | 539.956803 |
Nautical Mile to Kilometer Conversion Table
| Nautical Mile (nmi) | Kilometer (km) |
|---|---|
| 0.5 | 0.926 |
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 15 | 27.78 |
| 20 | 37.04 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
| 250 | 463 |
| 500 | 926 |
| 1000 | 1,852 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Kilometer (km)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Nautical Mile (nmi)
Length
1 international nautical mile = 1852 m exactly, adopted by the First International Extraordinary Hydrographic Conference (1929).
Source: Units accepted for use with the SI, SI Brochure Table 8
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Kilometer to Nautical Mile
To convert from Kilometer (km) to Nautical Mile (nmi), multiply the value by 0.5399568035.
Formula: nmi = km × 0.5399568035
Reverse: km = nmi × 1.852
Step-by-Step Example
- Start with your value in Kilometer. For example: 5 km
- Multiply by the conversion factor: 5 x 0.5399568035
- The result is: 2.699784 nmi
About Kilometer
The kilometer equals 1,000 meters and is the standard unit for measuring distances between geographical locations in most countries.
Fun Fact: The circumference of Earth is approximately 40,075 km.
Common uses: road distances, geography, running.
About Nautical Mile
The nautical mile equals 1,852 meters and is used primarily in aviation and maritime navigation.
Fun Fact: One nautical mile corresponds to one minute of latitude on the Earth's surface.
Common uses: navigation, aviation, maritime.
Frequently Asked Questions
How many Nautical Mile are in 1 Kilometer?
There are exactly 0.5399568035 Nautical Mile in 1 Kilometer. This means the conversion factor from Kilometer to Nautical Mile is 0.5399568035.
What is the formula to convert Kilometer to Nautical Mile?
The formula to convert Kilometer to Nautical Mile is: nmi = km × 0.5399568035. For example, to convert 10 Kilometer to Nautical Mile, you would multiply 10 by 0.5399568035.
What is a Kilometer?
The kilometer equals 1,000 meters and is the standard unit for measuring distances between geographical locations in most countries.
What is a Nautical Mile?
The nautical mile equals 1,852 meters and is used primarily in aviation and maritime navigation.
What are the common uses of Kilometer?
The Kilometer is commonly used in road distances, geography, running.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Kilometer to Nautical Mile converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kilometer-to-nautical_mile