The rate of growth can be very different among children, but a rule of thumb average for normal growth is considered to be: Months 0-12: growth of around 10 inches Years 1-2: around 5 inches per year Years 2-3: around 3 inches per year Year 3 to puberty: around 2 to 2 inches per year It is possible to fall outside these ranges and still have normal growth, consult a paediatric endocrinologist to know more. Visit our growth and hormone treatment hospital in Gurugram to have the best treatment.