Nautical Miles to Kilometres Converter
Type a value in nautical miles to see it in kilometres. It works both ways: type in the kilometres box to convert back.
Formula
To convert nautical miles to kilometres, multiply by 1.852.
1 nmi = 1.852 km and 1 km = 0.539956803456 nmi.
Nautical miles to kilometres table
| Nautical miles | Kilometres |
|---|---|
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 5 nmi | 9.26 km |
| 10 nmi | 18.52 km |
| 20 nmi | 37.04 km |
| 50 nmi | 92.6 km |
| 100 nmi | 185.2 km |
| 200 nmi | 370.4 km |
| 500 nmi | 926 km |
Worked examples
2 nmi in kilometres
2 nmi
3.704 km
2 × 1.852 = 3.704
20 nmi in kilometres
20 nmi
37.04 km
20 × 1.852 = 37.04
200 nmi in kilometres
200 nmi
370.4 km
200 × 1.852 = 370.4
About Nautical Miles to Kilometres Converter
This converter turns nautical miles into kilometres as you type, and works the other way too: type in the kilometres box to convert back. To convert nautical miles to kilometres, multiply by 1.852. For example, 2 nmi is 3.704 km, and 20 nmi is 37.04 km.
The UK uses metric units for most measurements, but road signs are in miles and yards, and many people still think of height in feet and inches, so length conversions come up every day. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use Nautical Miles to Kilometres Converter
- Type the amount in nautical miles in the first box.
- Read the answer in kilometres in the second box and in the result line below.
- To convert the other way, type in the kilometres box instead, or use the swap button to open the kilometres to nautical miles page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Checking a product size listed in another system
- Following plans, patterns or instructions from abroad
- Converting a height or a distance for a form
- Helping with homework that mixes metric and imperial units
Frequently asked questions
How many kilometres are in one nautical mile?
There are 1.852 kilometres in one nautical mile. This figure is exact, because both units have fixed definitions.
How do I convert nautical miles to kilometres?
To convert nautical miles to kilometres, multiply by 1.852. For example, 200 nmi is 370.4 km.
How do I convert kilometres to nautical miles?
Going the other way, divide by 1.852 (the same as multiplying by 0.5399568035). The kilometres to nautical miles converter does this for you.
What is 50 nmi in kilometres?
50 nmi is 92.6 km.
Why does the UK still use miles?
Road distances and speed limits stayed in miles and yards when the UK moved to metric units for trade and science. The Weights and Measures Act allows miles, yards, feet and inches for road traffic signs, so you will meet both systems.