BMI calculation tool

1) Enter the height and weight you want to check.
2) Displays BMI, BMI prime, obesity degree, ponderal index, standard weight, and difference from standard weight.

BMI (Body Mass Index), also known as ``body mass index'' in Japanese, is a body mass index that expresses ``a person's degree of obesity'' calculated from the relationship between weight and height. The unit of BMI is "kg/m2". The same BMI is used in the same calculations for both men and women.

• BMI: BMI number
• Obesity level: Obesity level according to the standards of the Japan Obesity Society
• BMI Prime: An index common in Europe and America that shows the percentage of BMI when healthy (23 for Asians and 25 for Westerners). 1 is appropriate
• Ponderal index: An index calculated from weight and height (kg/㎥). Used to understand the balance of the baby's physique
• Standard weight: Weight based on BMI22
• Difference from standard weight: Difference between standard weight and entered weight
• Healthy BMI range: normal weight BMI range according to the Japanese Obesity Society standards
• Healthy weight range: normal weight range according to the standards of the Japan Obesity Society

• BMI (kg/㎥) = Weight (kg) / (Height (m))²
• BMI Prime = BMI / Standard BMI (23 for Asians, 25 for Westerners)
• Ponderal index I (kg/㎥) = Weight (kg) / (Height (m))³

World Health Organization (WHO) standard values

Japan Obesity Society standard values

Average BMI by age (age) and male / female

Basic values for infants and young children (Kaup index)

Reference value for pregnant women

This tool is available for free.