This skill accepts weight in Kilograms or Pound and Height in Centimetres or Feet. Simply ask alexa followings: - Calculate My BMI - What is BMI - What is My BMI - My Weight is 53 kilograms and height is 170 centimeters - What would be my BMI if my weight is 67 kilograms and height is 200 centimetres Please note, BMI(Body Mass Index) is measure of body fat based on height and weight. BMI is only applicable for adults. The indicative BMI number does not guarantee your personal health