Most current, scientifically accepted estimates for the Megalodon's maximum size fall into the 60-70 foot range, with a weight of 50-70 tons.
The Megalodon Shark Was The Largest Predator That Ever Lived. While most adult Megalodon teeth fell into the 4-5” size range, a few massive, fossil teeth.
Megalodon (Carcharocles megalodon), meaning "big tooth", is an extinct species of shark that .. In comparison, the maximum recorded size of the great white shark is 6.1 meters (20 ft), and the whale shark (the largest living fish) is 12.65 m ( 42 ft). Mature male megalodon may have had a body mass of 12.6 to 33.9 metric.
Megalodon, member of an extinct species of megatooth shark (Otodontidae) This data suggests that mature adult megalodons had a mean length of 10.2.