Lake Superior is 31,700 square miles (82,103 square kilometers) and is the world’s largest freshwater lake; Lake Huron is 23,000 square miles (59,570 square kilometers) and the third largest freshwater lake; Lake Michigan is 22,300 square miles (57,757 square kilometers) and the fourth largest freshwater lake; Lake Erie is 9,900 square miles (25,641 square kilometers), the world’s tenth largest freshwater lake; and Lake Ontario, 7,300 square miles (18,907 square kilometers) is the twelfth largest freshwater lake.