I have very tall grandparents(6ft+) and short parents(5ft9 and 4ft9). could i grow taller than my predicted height?(5ft)

Growth potential: After puberty, most men and women do not experience much increase in height. The best way to maximize your height is through balanced nutrition, good posture and exercises that will strengthen your back and core muscles to support your spine.

It happens...but..: At a listed age of 19 it is unlikely you will grow any taller. Women usually add 2-3 inches after initial menses and stop. You can only grow taller if your growth centers open. These usually close in women at 15-17. You can have an x-ray done of your wrist/hand to assess growth centers. If this reveals a bone maturity greater than 18 you are done.

At 19: You have most likely attained your maximal height. Though your epiphyseal growth plate fuses around the age of 25years. Theoretically you could still grow but unlikely