IBW Calculator (Ideal Body Weight)

Find out your ideal body weight for free in seconds

Ideal Body Weight Calculator

How to use IBW calculator

To use the ideal body weight calculator you have to follow these steps:

Open the web page that contains the ideal body weight calculator.
Enter your height in centimeters, gender, and age in years in the respective fields.
Click on the “Calculate Ideal Weight” button.
The page will display the results for four different formulas to calculate ideal body weight, namely Robinson formula, Miller formula, Hamwi formula, and Devine formula.
Each formula provides a different result based on various factors, such as gender and height. It is recommended to take the average of all four results to get a more accurate estimate of your ideal body weight.
Note that the results are in kilograms (kg) and are rounded to one decimal place.

By using this ideal body weight calculator, you can get an estimate of the weight that is considered healthy for your height, gender, and age. It is important to remember that these formulas provide only an estimate, and the actual ideal body weight may vary depending on several other factors such as muscle mass, bone density, and body type. Therefore, it is always recommended to consult a healthcare professional before making any changes to your diet or exercise routine.

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IBW Formula

The ideal body weight calculator uses four different formulas to calculate the ideal body weight, namely Robinson, Miller, Hamwi, and Devine formulas. These formulas are based on different criteria such as gender, height, and age. For example, the Robinson formula is based on height alone, whereas the Miller formula takes into account both height and gender.

Robinson formula

This formula is based on the Metropolitan Life Insurance tables and is the most commonly used formula. It takes into account gender, height, and age. The equation for Robinson formula is:

For men: IBW = 52 + 1.9 x (height in inches – 60)

For women: IBW = 49 + 1.7 x (height in inches – 60)

Miller formula

This formula is also based on the Metropolitan Life Insurance tables and is similar to Robinson formula, but with slightly different coefficients. The equation for Miller formula is:

For men: IBW = 56.2 + 1.41 x (height in inches – 60)

For women: IBW = 53.1 + 1.36 x (height in inches – 60)

Hamwi formula

This formula is based on the 1964 study by G. J. Hamwi and takes into account only gender and height. The equation for Hamwi formula is:

For men: IBW = 48 kg + 2.7 kg for each inch over 5 feet

For women: IBW = 45.5 kg + 2.2 kg for each inch over 5 feet

Devine formula

This formula is based on the 1974 study by B. J. Devine and is similar to Hamwi formula, but with slightly different coefficients. The equation for Devine formula is:

For men: IBW = 50 kg + 2.3 kg for each inch over 5 feet

For women: IBW = 45.5 kg + 2.3 kg for each inch over 5 feet