How big loggerhead when adult?

Adult loggerhead sea turtles typically weigh between 200 and 400 pounds (90 to 180 kilograms) and can measure about 3 to 4 feet (0.9 to 1.2 meters) in shell length. Some individuals may exceed these averages, with the largest recorded loggerhead weighing over 1,000 pounds (450 kilograms). Their size can vary based on their habitat and diet.