Kilometer to Nautical mile Converter
Type a value — the answer appears instantly. 1 km = 0.5399568 nmi.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
0.5399568 nautical miles
= 1,000 m= 3,280.84 ft
equals 0.5399568 nautical milesFormula: nmi = km × 0.5399568
Kilometer to Nautical mile formula
nmi = km × 0.5399568
Convert 5 kilometers to nautical miles
- Start with 5 kilometers.
- Multiply by the conversion factor: 5 × 0.539957 = 2.699784.
- So 5 km = 2.699784 nmi.
Kilometer to Nautical mile conversion table
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 0.01 km | 0.005399568 nmi |
| 0.1 km | 0.05399568 nmi |
| 0.25 km | 0.1349892 nmi |
| 0.5 km | 0.2699784 nmi |
| 1 km | 0.5399568 nmi |
| 2 km | 1.079914 nmi |
| 3 km | 1.61987 nmi |
| 4 km | 2.159827 nmi |
| 5 km | 2.699784 nmi |
| 6 km | 3.239741 nmi |
| 7 km | 3.779698 nmi |
| 8 km | 4.319654 nmi |
| 9 km | 4.859611 nmi |
| 10 km | 5.399568 nmi |
| 15 km | 8.099352 nmi |
| 20 km | 10.79914 nmi |
| 25 km | 13.49892 nmi |
| 30 km | 16.1987 nmi |
| 40 km | 21.59827 nmi |
| 50 km | 26.99784 nmi |
| 75 km | 40.49676 nmi |
| 100 km | 53.99568 nmi |
| 250 km | 134.9892 nmi |
| 500 km | 269.9784 nmi |
| 1,000 km | 539.9568 nmi |
| 5,000 km | 2,699.784 nmi |
| 10,000 km | 5,399.568 nmi |
Unit definitions
What is a kilometer?
The kilometre is one thousand metres, the metric unit for measuring road distances, running events, and geography in most countries. Road signs, car odometers, and marathons (42.195 km) are all expressed in kilometres. One kilometre is about 0.621 miles.
What is a nautical mile?
The nautical mile is exactly 1852 metres, originally one minute of latitude along a meridian. It is the standard distance unit in maritime and air navigation, and the knot (one nautical mile per hour) derives from it. It is slightly longer than a statute mile.
Frequently asked questions
How many nautical miles are in one kilometer?
One kilometer equals 0.5399568 nautical miles (1 km = 0.5399568 nmi).
How do I convert kilometers to nautical miles?
Multiply the value in kilometers by 0.539957. For example, 10 km × 0.539957 = 5.399568 nmi.
Which is bigger — a kilometer or a nautical mile?
A nautical mile is bigger: one nautical mile contains 1.852 kilometers.
Is this kilometer to nautical mile converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.