165 the standard weight of boys is calculated according to the b mi index. Mi refers to weight divided by the square of height. According to this formula, the standard weight of 165 boys should be between 54 and 68 kilograms. This is the best in this series. If it is less than 54 kg, it means that it is too thin and needs to gain weight. If you exceed this weight, you are overweight. You need to strengthen exercise and lose weight properly, which is good for your health.