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The Ideal Body Weight Calculator is designed to help you quickly estimate your ideal weight for men and women—without relying on an ideal weight chart.

Many people wonder, “What is my ideal weight, and does it fall within a healthy range?” Since ideal weight for men differs from ideal weight for women, this calculator uses gender-specific formulas to provide accurate results.

What Is Ideal Body Weight?

Ideal Body Weight (IBW) is an estimated weight that helps determine whether an individual is within a healthy weight range. It is influenced by several factors, including age, gender, and height.

IBW formulas differ for males and females because of variations in body composition and fat distribution.

Different Formulas for Calculating Ideal Body Weight

Ideal Body Weight formulas were originally developed to assist with medical drug dosage calculations. Each formula varies slightly based on the research and methodology used by its developers.

Among these, the Devine formula is the most widely used. Our ideal body weight calculator allows you to choose from multiple formulas for greater flexibility.

J. D. Robinson Formula (1983)

For Men:

IBW = 52 + (1.9 × (Ht − 60))

For Women:

IBW = 49 + (1.7 × (Ht − 60))

Where:

IBW = Ideal Body Weight (kg)
Ht = Height in inches

D. R. Miller Formula (1983)

For Men:

IBW = 56.2 + (1.41 × (Ht − 60))

For Women:

IBW = 53.1 + (1.36 × (Ht − 60))

Where:

IBW = Ideal Body Weight (kg)
Ht = Height in inches

B. J. Devine Formula (1974)

For Men:

IBW = 50 + (2.3 × (Ht − 60))

For Women:

IBW = 45.5 + (2.3 × (Ht − 60))

Where:

IBW = Ideal Body Weight (kg)
Ht = Height in inches

How to Use the Ideal Body Weight Calculator

Our ideal body weight calculator features a simple and user-friendly interface. Follow the steps below to calculate your ideal weight accurately:

Inputs:

Enter your age in years.
Select your gender from the drop-down menu.
Enter your height in feet/inches or centimeters.
Enter your current body weight in pounds (lbs) or kilograms (kg).
Select the Ideal Body Weight formula you want to use.

Results:

After entering the required information, click the Calculate button. This healthy weight calculator will display the following results:

Your Ideal Body Weight (IBW)
Adjusted Body Weight (ABW)
Percentage over or under Ideal Body Weight
Body Surface Area (BSA) using the DuBois formula
Your Body Mass Index (BMI)
Your Lean Body Weight (LBW)

Which Factors Affect Ideal Body Weight?

Several factors influence an individual’s ideal body weight. While height and gender are primary contributors, other elements such as genetics, health conditions, and lifestyle also play important roles.

Age
Gender
Height
Body frame size

What Is Ideal Body Weight for Kids and Teens?

Determining ideal body weight for children and teenagers (up to age 20) is more complex than for adults because growth patterns vary significantly during development.

Unlike adults, Ideal Body Weight formulas are not commonly used for children. Instead, healthcare professionals rely on BMI-for-age percentiles and growth charts.

The standard BMI formula for children and teens is:

BMI = (Weight ÷ (Height × Height)) × 703

These results are then interpreted using age- and gender-specific growth charts provided by organizations such as the CDC and WHO.

What’s the Ideal Weight for Males and Females?

The ideal weight differs for males and females due to natural biological differences in body composition and fat distribution.

Females typically have a higher percentage of body fat than males and tend to store fat in the hips, thighs, and buttocks, while males generally accumulate fat around the abdominal area.

Females: A healthy body fat percentage usually ranges between 21% and 24%.
Males: A healthy body fat percentage typically falls between 14% and 17%.

FAQs

How Do You Calculate Ideal Body Weight in Pounds?

Ideal Body Weight (IBW) in pounds can be estimated using the Devine formula converted to imperial units:

Men: IBW = 110 lb + 5 lb for each inch over 5 feet
Women: IBW = 100 lb + 5 lb for each inch over 5 feet

This method provides a quick and practical estimate based on height and gender.

What Is the IBW Range?

The Ideal Body Weight (IBW) range is commonly estimated using the following formulas in kilograms:

Males: IBW = 50 kg + 2.3 kg for each inch over 5 feet
Females: IBW = 45.5 kg + 2.3 kg for each inch over 5 feet

IBW should be considered a reference value and interpreted alongside other health indicators such as BMI, body fat percentage, and overall medical history.

What Percentage Is Ideal Weight?

Ideal weight is defined as 100% of Ideal Body Weight (IBW). Any variation from this value reflects either excess or deficit body weight.

Values above 100% indicate excess body weight
Values below 100% indicate a weight deficit

The xs/def (excess/deficit) value shows the actual amount of weight (in pounds or kilograms) above or below the calculated Ideal Body Weight.

References:

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