Here is a list of the world's highest (tallest) mountains. The heights (and sometimes the rankings) have changed over the years as geographers use new techniques and equipment to estimate the heights above sea level.

#	Mountain	Height (feet)	Height (meters)	Range
1	Everest	29,028	8,848	Himalayas
2	K2 (Godwin Austen)	28,250	8,611	Karakoram
3	Kanchenjunga	28,208	8,598	Himalayas
4	Lhotse I	27,923	8,511	Himalayas
5	Makalu I	27,824	8,481	Himalayas
6	Lhotse II	27,560	8,400	Himalayas
7	Dhaulagiri	26,810	8,172	Himalayas
8	Manaslu I	26,760	8,156	Himalayas
9	Cho Oyu	26,750	8,153	Himalayas
10	Nanga Parbat	26,660	8,126	Himalayas
11	Annapuma	26,504	8,078	Himalayas
12	Gasherbrum	26,470	8,068	Karakoram
13	Broad	26,400	8,047	Karakoram
14	Gosainthan	26,287	8,012	Himalayas
15	Annapuma II	26,041	7,937	Himalayas
16	Gyachung Kang	25,910	7,897	Himalayas
17	Disteghil Sar	25,858	7,882	Karakoram
18	Himalchuli	25,801	7,864	Himalayas
19	Nuptse	25,726	7,841	Himalayas
20	Masherbrum	25,660	7,821	Karakoram