As you know, geographic coordinates have several different systems. One of them, and the most popular in old maps and, for example, Wikipedia, is degrees, minutes and seconds (which looks like 15°24’15’‘N, 30°10’3’’E), other is decimal degrees form, it looks like 15.40417 30.1675 for the same point, and is used on map services like Google Maps. My converter will help to “translate” first form to second.