Nautical Miles to Kilometers Converter
nmi → km · 📏 Length
1 Nautical Miles = 1.852 Kilometers
How to convert Nautical Miles to Kilometers
To convert Nautical Miles to Kilometers, multiply the value in Nautical Miles by 1.852. For example, 5 nmi = 9.26 km.
If you need to convert from Nautical Miles to Kilometers, the key figure to remember is that one Nautical Miles equals 1.852 Kilometers. This page gives you a live calculator, a full reference table, and the underlying formula so you can convert nmi to km with complete confidence.
Length conversions are among the most common everyday calculations — whether you're following a recipe from another country, planning a DIY project, reading a map, or working with international product specifications.
Understanding Nautical Miles and Kilometers
Length and distance units split broadly into two systems: the metric system (meters, centimeters, kilometers) used by most of the world, and the imperial/US customary system (inches, feet, yards, miles) still standard in the United States. Engineering, construction, aviation, and shipping each rely on specific units — nautical miles for sea and air navigation, feet for altitude, millimeters for precision manufacturing.
How accurate is this conversion?
All length conversions on this page are exact by international agreement. Since 1959 the inch has been defined as exactly 2.54 centimeters, which makes every imperial-to-metric length conversion precise rather than approximate.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Nautical Miles to Kilometers values
The most frequently searched conversions are 1 Nautical Miles = 1.852 Kilometers, 5 Nautical Miles = 9.26 Kilometers, 10 Nautical Miles = 18.52 Kilometers, and 100 Nautical Miles = 185.2 Kilometers. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: When converting for construction or manufacturing, always carry at least one extra decimal place through your calculation and round only at the very end — rounding early compounds errors across multiple measurements.
Nautical Miles to Kilometers — Conversion Table
| Nautical Miles (nmi) | Kilometers (km) |
|---|---|
| 0.1 nmi | 0.1852 km |
| 0.25 nmi | 0.463 km |
| 0.5 nmi | 0.926 km |
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 5 nmi | 9.26 km |
| 10 nmi | 18.52 km |
| 25 nmi | 46.3 km |
| 50 nmi | 92.6 km |
| 100 nmi | 185.2 km |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 1000 nmi | 1,852 km |