Nautical Miles to Km Converter
Enter a value in nautical miles to convert it to kilometers — 1 nmi = 1.852 km.
Reviewed by the ToolNestr Editorial Team — July 2026
How to convert nautical miles to kilometers
Converting nautical miles to kilometers is a simple multiplication: take your length in nautical miles and multiply by the fixed conversion factor of 1.852 to get kilometers. Because the factor never changes, the same calculation works for any value, from tiny amounts to very large ones. The converter above applies it the moment you type, with no rounding errors in the underlying maths.
Used in sailing and aviation, where distances in nautical miles are converted to kilometers for planning. Knowing how to move between nautical miles and kilometers is useful whenever measurements are given in one system but you need them in the other — for shopping, travel, study, cooking, engineering or simply comparing figures from different countries.
The reference table below lists common nautical miles values already converted to kilometers, so you can read off everyday amounts at a glance without typing. For the opposite direction, use the Km to Miles Converter, which reverses the calculation exactly.
The formula and a worked example
Formula
km = nmi × 1.852
Worked example
To convert 10 nautical miles: 10 × 1.852 = 18.52 km. To convert 25 nautical miles: 25 × 1.852 = 46.3 km.
Nautical Miles to Km conversion table
| Nautical Miles (nmi) | Kilometers (km) |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
| 250 | 463 |
| 500 | 926 |
| 1,000 | 1,852 |
Values are rounded for display; the converter above keeps full precision.
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Frequently asked questions
How do I convert nautical miles to kilometers?
Multiply the number of nautical miles by 1.852. For example, 10 nmi × 1.852 = 18.52 km. The converter above does this automatically.
How many kilometers are in one nautical miles?
There are 1.852 kilometers in one nautical miles. Multiply by 1.852 for any amount.
Is this Nautical Miles to Km converter accurate?
Yes. It uses the exact conversion factor of 1.852, so results are precise. Values shown in the table are rounded for readability.
How do I convert kilometers back to nautical miles?
Divide the kilometers value by 1.852 to get nautical miles again.