Length and Area
nmitokm
Convert nautical miles (nmi) to kilometres (km).
Factor1 nmi = 1.852 km
Converter
nmi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
km
Rendered to 6 significant figures.
Formula
Formula
km = nmi × 1.852
Multiply any value in nautical miles by 1.852 to obtain the value in kilometres.
Worked example
Convert 100 nmi to km.
- 01Start with 100 nmi.
- 02Multiply by the conversion factor: 100 × 1.852 = 185.2 km.
Result100 nmi = 185.2 km
Conversion table
| nmi | km |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 20 | 37.04 |
| 50 | 92.6 |
| 100 | 185.2 |
| 200 | 370.4 |
| 500 | 926 |
| 1000 | 1852 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from nmi to km?
1 nmi equals 1.852 km. To convert, multiply the value in nautical miles by 1.852.
How do I convert 1 nmi to km?
1 nmi = 1.852 km. For any value, multiply by 1.852.
How do I convert km back to nmi?
Divide by the same factor — or equivalently, multiply by 0.5399568. So 1 km = 0.539957 nmi.
When would I need to convert nautical mile to kilometre?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
Yes. Both nmi and km are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).