At present, there is no unified height and weight standard for adults, and the more commonly used clinical standards are body mass index and ideal weight. 1. Body mass index (BMI): calculated as BMI = weight (kg)/height (m)², BMI is 18.5~23.9 for normal weight; BMI is 24.0~27.9 for overweight; ≥28 for obesity. If your height is 1.7 meters and weight is 60 kg, then BMI=60/1.7²=20.76, which is normal weight. 2. Ideal body weight: the calculation is more simple, ideal body weight (kg) = height (cm) – 105. ideal body weight ± 10% is normal weight, more than 10 ~ 19.9% for overweight, more than 20% of the ideal body weight for obesity. If an adult is 1.7 meters tall, the normal weight range is 58.5~71.5kg. Note that the above calculation method is only an estimate, as a reference.