Find if 71 kg weight and 172 cm height male/female is obese, extreme obese, overweight, underweight or ideal weight. The BMI score is 24 for 71 kilograms weight and 172 cm tall male/female, which indicates that the body weight is Normal as per WHO BMI chart. The Body Mass Index of 24 is derived from the weight of 71 kilograms divided by the square of height 172 centimeters.