The size ratio of calf and thigh can be 2:3 and the length ratio can be 1:1, but the ratio of the size of the legs can be affected by sports conditions, growth and development. Generally, the size of calf is 0.34 times the height and the size of thigh is 0.21 times the height, so the size ratio of calf and thigh is 2:3. The length of calf and thigh is basically the same, so the length ratio is 1:1. However, if you like to exercise, running, jumping and other sports, it will make your muscles thicker and fatter, which will cause the size ratio of the size of the legs to change, making the value greater than 2:3. If you are growing too fast, it will have an effect on the length of the bones, and thus the length ratio will change.