Kilometres to Nautical miles Converter
Convert kilometres (km) to nautical miles (nmi) instantly. Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Result
- Nautical miles
- 0.539957 nmi
How to use the kilometres to nautical miles converter
- Enter the kilometres (km).
- The results update as you type, or press Calculate.
- Read the nautical miles first, then the supporting figures below it.
Formula
Nautical miles = kilometres × 0.5399568035
Worked example
For example, with these inputs:
- Kilometres (km): 1
the calculator returns:
- Nautical miles: 0.539957 nmi
Kilometres to Nautical miles table
| Kilometres | Nautical miles |
|---|---|
| 1 km | 0.539957 nmi |
| 2 km | 1.0799 nmi |
| 5 km | 2.6998 nmi |
| 10 km | 5.3996 nmi |
| 20 km | 10.7991 nmi |
| 25 km | 13.4989 nmi |
| 50 km | 26.9978 nmi |
| 100 km | 53.9957 nmi |
| 250 km | 134.9892 nmi |
| 500 km | 269.9784 nmi |
| 1,000 km | 539.9568 nmi |
About this conversion
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Frequently asked questions
How many nautical miles are in one kilometre?
1 km = 0.539957 nmi.
How do I convert km to nmi?
Nautical miles = kilometres × 0.5399568035.