Individual `` Triceratops '' are estimated to have reached about 7.9 to 9.0 m ( 26.0 -- 29.5 ft ) in length , in height , and 6.1 -- 12.0 tonnes ( 13,000 -- 26,000 lb ) in weight .
Size . Individual `` Triceratops '' were about 7.9 to 9.0 m ( 26.0 -- 29.5 ft ) in length , 2.9 to 3.0 m ( 9.5 -- 9.8 ft ) in height , and 6.1 -- 12.0 tonnes ( 13,000 -- 26,000 lb ) in weight .