Calculate Ideal body weight for Women, Man, and Kids


INPUT YOUR AGE calculate age here*
To calculate BMI for kids is 2 to 20 years and more than 20 years is for adults






It is an estimation of the ideal body weight of a person based on the height of a healthy BMI range.

Several formulas developed on research by scientists to estimate ideal body weight based on height. Some most widely used formulas follow here based on different values findings from research by scientists and scholars. These formulas developed for mainly drug dose calculations.

Formula Ideal weight
Hamwi --
Devine --
Robinson --
Miller --

Ideal body weight (IBW):

We all know that overweight and obesity are the main causes of most diseases. This idealistic body weight(IBW) concept was mainly introduced to estimate medical dose. But it took in different perceptions in our society as the media, the fashion world promoted it as visuals appeal of a body.

Although, the ideal weight is considered in different fields such as national defense, sports, and fashion. And it also helps people to maintain their body weight according to height to remain fit in his, her, their, etc. lifestyle.

Idealistic body weight(IBW) always not to be considered a perfect indicator for healthy body measurement.

Ideal body weight for women and men:

In general, with the same BMI as men and women, women tend to have more fat than men. So the level of body fitness may differ for the same BMI for men and women. Therefore, females less in weight than men as the male body contains a higher percentage of muscle mass and bone density than females. And also it is observed that men tend to taller than women. That's why ideal body weight is different in men and women of the same height and age.

Ideal weight for kids:

Due to body structure and height, the methods and measurement procedure is different for hidden for the age 2-20 years of age. Children's health status defined with percentile, calculated with age, gender, height, and weight-based on CDC guides line.

Ideal weight chart according to CDC (Centres for Disease Control and Prevention) Chart for boys and girls are given below. To download the BMI CDC chart click the link below.

How to calculate ideal body weight(IBW)?

There are numerous methods developed by scientists and researchers to determine ideal body weight. Some of the popular researchers like G. J. Hamwi, B. J. Devine, J. D. Robinson, D. R. Miller presented formulas to estimate ideal weight. All these formulas they defined based on height and gender.

B. J. Devine formula: The divine formula is similar to the G.J. Hamwi formula. Later Robinson and Millar represented a modified formula to estimate IBW. The main purpose of the formula was to define medicinal dose. Here is the Divine formula below.

  • Male: 50.0 kg + 2.3 kg per inch over 5 feet
  • Female: 45.5 kg + 2.3 kg per inch over 5 feet

All the above formulas are based on height and adding values over 5ft with a fixed value defined differently for men and women.

For Children: Due to the body structure and height of the kid’s age group between 2 to 20, the calculation method is different. It calculates according to CDC (Centres for Disease Control and Prevention) chart given above. According to the CDC or Centers for Disease Control and Prevention category considered percentile calculated based on BMI and Age and sex. The chart is different for boys and girls.

BMI Method: Another method is the BMI method which is popular and common. It estimates in the healthy BMI range. According to the World Health Organization (WHO) healthy BMI range is 24.9 kg/m2 for both males and females. Based on this it is easy to estimate the ideal body weight with body height.

BMI Formula:

BMI= Body mass(kg) / height(m)2

In this online IBW calculator, we estimate based on BMI and other formulas like Devine and others based on height for men and women.

How to calculate IBW Online using

  • Just enter in required fields.
  • Press "CALCULATE" button.
  • The calculation shows Ideal Body Weight (IBW) in different methods and formulas.

Note: IBW is not the only indicator to determine health status. Other health indicators also used along with the IBW to get your health status. In our online tools for IBW, tried our best to calculate the accurate value. It is suggested to check other tools to compare the value and consult with the certified medical practitioner.