Ideal Body Weight (IBW) Calculator

The Ideal Body Weight (IBW) Calculator estimates the ideal weight for an individual based on height, gender, and sometimes frame size. The concept was initially developed to help determine proper medication dosages but is also widely used for general health assessments. IBW does not account for muscle mass or body composition but provides a general weight range for a healthy physique.

How to Calculate Ideal Body Weight

There are several formulas to estimate IBW. Here are the two most common:

Devine Formula (Most Commonly Used)

• Devine Formula (Most Commonly Used)
  For Men:
  𝐼𝐵𝑊 = 50 kg +2.3  kg for each inch over 5 feet
  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
  IBW = 45.5 kg+2.3 kg for each inch over 5 feet
• Hamwi Formula
  For Men:
  𝐼𝐵𝑊 = 48.0 kg+2.7 kg for each inch over 5 feet
  IBW = 48.0 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
  IBW = 45.5 kg+2.2 kg for each inch over 5 feet

For a quick approximation, we’ll use the Devine formula here.

What the Result Means

• Below IBW: If you are significantly below your IBW, it might indicate underweight status, potentially due to low muscle mass or health conditions.
• Around IBW: A weight around your IBW is generally considered healthy and may support good physical and metabolic health.
• Above IBW: Being above your IBW could indicate overweight or obesity, potentially increasing the risk of conditions like diabetes, heart disease, and hypertension.

Improving Health Based on IBW

1. Exercise: Regular exercise, especially strength training, can help achieve a balanced body composition.
2. Nutrition: A balanced diet tailored to your energy needs can support healthy weight gain or loss.
3. Consult a Professional: Dietitians or fitness coaches can provide a customized plan, especially if you are outside the IBW range.