There is no absolute standard, but generally one and a half year old boys height range is 76.6-89.1cm, weight range is 9.07-14.09kg, girls height range is 75.6-87.7cm, weight range is 8.63-13.29kg. One and a half year old baby weight and height standards need to be looked at by gender, boys and girls are slightly different, boys height between 76.6-89.1cm, weight between 9.07-14.09kg. Girls’ height between 75.6-87.7cm and weight between 8.63-13.29kg is usually normal. However, the height and weight of babies are affected by genetics, nutrition, as well as the environment, diseases and other factors, so there are large individual differences and no absolutely fixed standards. If your one-and-a-half year old baby’s height and weight are significantly different from those of children of the same age, it is recommended that you consult a doctor in time to rule out disease factors, and if necessary, actively treat and deal with them.