A web application to convert a list of coordinates from EGSA87 (Greek Geodetic System) to WGS84 (World Geodetic System). You can directly copy & paste values from excel and edit them inside the cells. Each row of data must contains a string describing the Point ID (e.g., P1), as well as the X and Y coordinates (float values) in EGSA87 Geodetic System (e.g., 475660 and 4202310, respectively). If the Point ID is not present, the current row is skipped. Upon filling the data, click "Convert" button to get the list of the converted coordinates and the corresponding polyline on the map.