The Google Maps Geocoding API is a common choice and this is the API we’ll call in the easy option. There are a number of geocoder APIs and some geocoders are faster than others.
#Convert degrees minutes seconds to decimal degrees excel code
You’ll need to write the Visual Basic (VBA) script to make a call to an external geocoder, or find the code elsewhere, such as this GitHub repo. We’ll cover the hard way first, which is what you’ll need if you require the coordinates to live in your Excel document. Now, there are two ways to geocode latitude and longitude from an Excel spreadsheet: the hard way and the easy way. Geocoding is the conversion of street addresses to latitude and longitude data that can be mapped. The decimals are pretty much useless since you know it’s an approximation.
Figure: The 4476 number is the distance in Nautical Miles. Figure: You only have to enter that formula into EXCEL ONE time. Even if you were to substitute it with the radius of a sphere, assuming the Earth is spherical, at 3437.7468 NM, you will not be near the real, accurate distance. That three thousand number, in the end, is the radius of Earth, in, Nautical Miles. Now that you have the latitude and longitude values in decimals, you just face the equation for the nautical miles between Timbuktu and Casablanca, noted underneath.
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