If measured from the base to its peak Hawaii's Mauna Kea is the tallest mountain in the world at 10,203 m (compared to [[Mount Everest]] which is 8,848 m above sea level)<ref>http://hypertextbook.com/facts/2001/BeataUnke.shtml</ref>. | If measured from the base to its peak Hawaii's Mauna Kea is the tallest mountain in the world at 10,203 m (compared to [[Mount Everest]] which is 8,848 m above sea level)<ref>http://hypertextbook.com/facts/2001/BeataUnke.shtml</ref>. |