Guinea is in western Africa, bordering the North Atlantic Ocean, between Guinea-Bissau and Sierra Leone. Its geographic coordinates are 11°00′N 10°00′W﻿ / ﻿11.000°N 10.000°W﻿ / 11.000; -10.000. Guinea's total area is 245,857 km2, comprising 245,717 km2 of land and 140 km2 of water.