If you play around with GPS coordinates you will quickly need access to a map. The GPS coordinate numbers do not reveal a geographic location useful to a human. The two go-to internet resources are Google and Baidu. Both have maps for North America and China, but are not as good outside of their competitive areas. As I am in Toronto and have lived in China, I can verify their usefulness for these locations, but for other parts of the world you are on your own.