Enter your gender and height into the calculator to determine your ideal body weight according to the Hamwi equation. This calculator is designed to provide an estimate of the ideal body weight for adults based on their gender and height.

Hamwi Equation Formula

The Hamwi equation uses the following formulas to calculate the ideal body weight:

For Males: IBW = 106 lb + 6 lb for each inch over 5 feet
For Females: IBW = 100 lb + 5 lb for each inch over 5 feet

Variables:

  • IBW is the ideal body weight (pounds)
  • Height is measured in inches

To calculate the ideal body weight using the Hamwi equation, select your gender, input your height in inches, and then apply the appropriate formula based on your gender.

What is the Hamwi Equation?

The Hamwi equation is a formula that was developed by Dr. G. J. Hamwi in 1964. It is used to estimate the ideal body weight (IBW) for adults, which is the weight that is considered to be optimal for health. The equation takes into account the individual’s gender and height and provides a simple way to calculate an approximate ideal weight. It is often used in healthcare settings to help guide nutritional assessments and dietary recommendations.

How to Calculate Ideal Body Weight Using the Hamwi Equation?

The following steps outline how to calculate the ideal body weight using the Hamwi equation.

  1. Select your gender.
  2. Input your height in inches.
  3. Use the appropriate formula based on your gender.
  4. Calculate your ideal body weight (IBW) in pounds.
  5. Compare your result with the calculator above to verify your calculation.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Gender: Male

Height: 70 inches (5 feet 10 inches)

According to the Hamwi equation, the ideal body weight for a male who is 70 inches tall is:

IBW = 106 lb + 6 lb for each inch over 5 feet

IBW = 106 lb + 6 lb * (70 – 60)

IBW = 106 lb + 60 lb

IBW = 166 pounds