Convert nautical league (int.) to mile (US survey) Online | Free Length Converter

International Nautical League

The international nautical league is a standardized version of the nautical league used in maritime navigation. It is defined as exactly 3 international nautical miles, which equals 5,556 meters or about 3.45 miles. This standardization helps avoid confusion caused by variations in historical definitions of the league. While the nautical mile remains the primary unit in modern navigation, the international nautical league provides a consistent way to measure longer distances at sea when needed.

Mile (US Survey)

The US survey mile is a unit of length used in land surveying in the United States. It is defined as exactly 5,280 survey feet, with one survey foot equal to 1200/3937 meters (approximately 0.3048006096 meters). This makes the US survey mile equal to about 1,609.3472 meters, slightly longer than the international (statute) mile, which is exactly 1,609.344 meters.

The US survey mile was established to maintain consistency with older land measurement systems based on the Mendenhall Order of 1893. It was commonly used in mapping, legal land descriptions, and public land surveys.

Although the difference between the survey and statute mile is very small (about 3.2 millimeters), it can be significant over large distances. As of 2023, the U.S. has officially retired the survey foot (and survey mile) for most applications, favoring the international foot and mile to standardize measurements.