There is no such thing as a perfect weight for a 5’7″ girl, because different people will have different weight standards, as long as it is between 54kg~66kg and the body mass index is between 18.5~24.9 is normal.
The formula for calculating a girl’s weight is (height – 70) x 60%, and if the actual weight is within the ±10% fluctuation range of this calculated value, then it is normal. According to the calculation, the standard weight of a girl of one meter seven is about 54kg-66kg.
Generally speaking, the body mass index BMI = weight (kg) / height (m) square, the normal value is about 18.5-24.9, if the female BMI index to maintain in this range, then it is more standard.
In normal times, it is recommended that girls develop healthy eating habits, take timely nutritional supplements, ensure a balanced diet, and take appropriate outdoor exercise in order to maintain a standard weight.