Hamwi Formula Calculator

Calculate Ideal Body Weight (IBW)



Formula

The formula to calculate the Ideal Body Weight (IBW) using the Hamwi method is:

For males:

\[ \text{IBW} = 106 \text{ lb} + 6 \text{ lb for each inch over 5 feet} \]

For females:

\[ \text{IBW} = 100 \text{ lb} + 5 \text{ lb for each inch over 5 feet} \]

Where:

What is the Hamwi Formula?

The Hamwi formula is a simple method to estimate the ideal body weight of an adult. It was developed by Dr. G.J. Hamwi in 1964 and is still used today, particularly in the field of nutrition and dietetics. The formula takes into account the biological differences between males and females and provides a quick reference for healthcare professionals to assess body weight in relation to height.

Example Calculation

Let's consider an example:

Using the formula to calculate the Ideal Body Weight:

\[ \text{IBW} = 106 \text{ lb} + 6 \times (70 - 60) = 166 \text{ lb} \]

This means that the Ideal Body Weight (IBW) is 166 lb.