The growth rate of a Sulcata tortoise is influenced by several factors. Consequently, an exact determination of how fast a Sulcata tortoise grows remains elusive. Variables such as protein content, humidity levels, supplement types, and feeding frequency collectively contribute to the individualized growth rate of each tortoise. As a general guideline, anticipate a growth of 2 to 4 inches in length and 1 to 2 inches in width annually. Weight gain correlates with age and should be assessed proportionally, typically ranging from 5 to 10% per year for baby Sulcata tortoises.