The <a href="http://www.nps.gov/seki/shrm_pic.htm">General Sherman Tree</a> in Sequoia National Park is the largest (by volume) tree in the world.

Computing the volume of a standing tree is the practical equivalent of calculating the volume of an irregular cone. For purposes of volume comparison, only the trunk of a giant sequoia is measured, including the restored volume of basal fire scars. Using these accepted standards and actual field measurements taken in 1975, the volume of the Sherman Tree was calculated to be slightly over 52.500 cubic feet (1486.6 meters).

More Sherman Tree statistics:
(as i cant do bio tables yet, you may see the Sherman Tree statistics <a href="http://www.nps.gov/seki/alt_shrm.htm">here</a>.)

Feet Meters
Height above Base 274.9 83.8
Circumference at Ground 102.6 31.1
Maximum Diameter at Base 36.5 11.1
Diameter 60' (18.3 m) above base 17.5 5.3
Diameter 180' (54.9 m) above base 14.0 4.3
Diameter of Largest Branch 6.8 2.1
Height of First Large Branch above the Base 130.0 39.6
Average Crown Spread 106.5 32.5


<a href="http://www.nps.gov/seki/alttree.htm">See the list of the 35 biggest giant sequoias. </a>