The standard weight of height1.78m is calculated by the simplest method, that is, 178 minus 105 equals 73kg, and the calculation method of the World Health Organization equals 178 minus 80, and the result multiplied by 0.7 equals 68.6kg, which is1.78m. If women use 6544, they grew up in China, which is different between the north and the south. If you grew up in the north, the result obtained by subtracting 178 from 150 multiplied by 0.6 plus 50 equals 66.8kg If you grew up in the south, the result obtained by subtracting 178 from 150 multiplied by 0.6 plus 48 equals 64.8kg.. It can also be calculated by the body mass index method, which is also called body mass index. The body mass index is divided by the square of height, in kilograms, and the height is expressed in meters. The standard normal value of body mass index is 18.5-23.9, and the calculated weight is 58.6-75.7.