1 nautical mile is equal to how many yards
The derived unit of speed is the knotdefined as one nautical mile per hour.
There is no internationally agreed symbol. The word mile is from the Latin word for a thousand paces: Navigation at sea was done by eye  until around when navigational instruments were developed and cartographers began using a coordinate system with parallels of latitude and meridians of longitude.
In the Dutch scientist Snell assessed the circumference of the Earth at 24, Roman miles 24, statute miles. Around that time British mathematician Edmund Gunter improved navigational tools including a new quadrant to determine latitude at sea.
Nautical Mile Conversion Chart
These sexagesimal base 60 units originated in Babylonian astronomy. Gunter used Snell's circumference to define a nautical mile as 6, feet, the length of one minute of arc at 48 degrees latitude.
Since the earth is not a perfect sphere but is an oblate spheroid with slightly flattened poles, a minute of latitude is not constant, but about 1, meters at the poles and 1, meters at the Equator,  with a mean value of 1, Inthe international nautical mile was defined by the First International Extraordinary Hydrographic Conference in Monaco as precisely 1, meters.
How to create custom conversion table?
Enter a valid value into text box below, default is "1", Ex: The Start number is 10 If you don't select, it will be incremented by 1 as default. It will be incremented as It will be incremented as 10, 15, 20, 25 etc.
The service was slow. A year later the technology allowed us to create an instant units conversion service that became the prototype of what you see now.
To conserve space on the page some units block may display collapsed. Does the page look too crowded with so many units?
You can hide the blocks you don't need by clicking on the block headline.