Boys height and weight comparison table, there are generally the following three methods. a. The standard weight for men is generally considered to be height (cm) – 105 = standard weight (kg). b. The World Health Organization method of calculating standard weight. Male: (height cm – 80) * 70% = standard weight. Standard weight plus or minus 10% is normal weight. Standard weight plus or minus 10%-20% is overweight or underweight. C. Another new type of standard weight calculation, standard weight = height (m) * height (m) * 22, overweight calculation formula: overweight % = (actual weight – ideal weight) / (ideal weight) } x 100%.