Online calculator to convert nautical miles to kilometers (nmi to km) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Length or Distance units.
Conversion Calculator
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Convert nautical miles to km
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Conversion Definitions
The following is a list of definitions relating to conversions between nautical miles and kilometers.
What is a nautical mile (M, NM, or nmi)?
A nautical mile is a non-SI unit of Length or Distance. A nautical mile is based on the circumference of the Earth and is used by sea and air navigators. It is approximately one minute of arc measured along any meridian. The symbol for nautical mile is M or NM or nmi. There are 0.5399568 nautical miles in a kilometer.
What is a kilometer (km)?
A kilometer is a unit of Length or Distance in the Metric System. The symbol for kilometer is km. There are 1.852 kilometers in a nautical mile. The International spelling for this unit is kilometre.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from nautical miles to km is:
km = nautical miles x 1.852
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from nautical miles to kilometers (nmi to km).
Nautical Mile to Kilometer Conversion Example
Task: Convert 10 nautical miles to kilometers (show work) Formula: nautical miles x 1.852 = km Calculations: 10 nautical miles x 1.852 = 18.52 km Result: 10 nautical miles is equal to 18.52 km
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from nautical miles to km.
Nautical Miles to Kilometers Conversion Chart
| nautical miles (nmi) | kilometers (km) |
|---|---|
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 3 nmi | 5.556 km |
| 4 nmi | 7.408 km |
| 5 nmi | 9.26 km |
| 6 nmi | 11.112 km |
| 7 nmi | 12.964 km |
| 8 nmi | 14.816 km |
| 9 nmi | 16.668 km |
| 10 nmi | 18.52 km |
| 20 nmi | 37.04 km |
| 30 nmi | 55.56 km |
| 40 nmi | 74.08 km |
| 50 nmi | 92.6 km |
| 75 nmi | 138.9 km |
| 100 nmi | 185.2 km |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 750 nmi | 1,389 km |
| 1,000 nmi | 1,852 km |
| 2,500 nmi | 4,630 km |
| 5,000 nmi | 9,260 km |
| 7,500 nmi | 13,890 km |
| 10,000 nmi | 18,520 km |
| 25,000 nmi | 46,300 km |
| 50,000 nmi | 92,600 km |
| 75,000 nmi | 138,900 km |
| 100,000 nmi | 185,200 km |
| 250,000 nmi | 463,000 km |
Related Units
This table provides a summary of the Length or Distance units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| inches | in or " | US Customary Units/Imperial System |
| feet | ft or ' | US Customary Units/Imperial System |
| yards | yd | US Customary Units/Imperial System |
| miles | mi | US Customary Units/Imperial System |
| picometers | pm | Metric System |
| nanometers | nm | Metric System |
| micrometers | μm | Metric System |
| millimeters | mm | Metric System |
| centimeters | cm | Metric System |
| decimeters | dm | Metric System |
| meters | m | Metric System |
| decameters | dam or dkm | Metric System |
| hectometers | hm | Metric System |
| kilometers | km | Metric System |
| megameters | Mm | Metric System |
| gigameters | Gm | Metric System |
| nautical miles | M or NM or nmi | Non-SI (International) |
| angstroms | Å | Non-SI (International) |
| rods | rod | Non-SI (International) |
Note: For Length and Distance conversions, US Customary Units and the Imperial System are equivalent.
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