How long is a sea turtle when its fully grown?

Fully grown sea turtles vary in size depending on the species. For instance, the leatherback sea turtle can reach lengths of up to 6 to 9 feet (1.8 to 2.7 meters), while the loggerhead typically measures around 3 to 4 feet (0.9 to 1.2 meters). Other species, like the green sea turtle, generally grow to about 3 to 4 feet as well. Overall, adult sea turtles can range from about 2 to 9 feet in length.