Ideal Weight Calculator

Which ideal body weight formula is the best to find your ideal body weight

IBW (Ideal Body Weight) formulas were initially developed to help with drug dosage calculations. Each formula follows a consistent format: a base weight for a height of 5 feet, with an additional weight increment for every inch above 5 feet.

For instance, if you are a 5’6” female estimating your ideal weight with the Robinson formula, you would add 1.7 kg for each inch above 5 feet to a base weight of 49 kg. This calculation would be:

49 kg+(1.7×6) kg=49 kg+10.2 kg=59.2 kg

This equals approximately 130 lbs.

Each formula uses different values based on the research conducted by the scientists who developed them. The Devine formula is one of the most commonly used formulas for calculating IBW. With our ideal body weight calculator, you can determine your ideal body weight using all available formulas:

Achieving an ideal body weight often involves a gradual and sustainable process to lose weight, which is crucial for permanent results.

Devine Formula for ideal body weight (1974)

Male: 50.0 kg + 2.3 kg per inch over 5 feet

Female: 45.5 kg + 2.3 kg per inch over 5 feet

Similar to the Hamwi Formula, originally intended for medicinal dosages based on weight and height. Over time, it became a universal standard for determining IBW.

Miller Formula for ideal body weight (1983)

Male: 56.2 kg + 1.41 kg per inch over 5 feet

Female: 53.1 kg + 1.36 kg per inch over 5 feet

Another modification of the Devine Formula.

Hamwi Formula for ideal body weight (1964)

Male: 48.0 kg + 2.7 kg per inch over 5 feet

Female: 45.5 kg + 2.2 kg per inch over 5 feet

Developed for medicinal dosage purposes.

Robinson Formula for ideal body weight (1983)

Male: 52 kg + 1.9 kg per inch over 5 feet

Female: 49 kg + 1.7 kg per inch over 5 feet

A modification of the Devine Formula.

healthy weight as healthy bmi range.

Peterson formula for ideal body weight using your target BMI (2016)

Peterson formula: (2.2 × target BMI) + (3.5 × target BMI × (height [m] - 1.5)).

Note: this formula is independent of sex and we not using it here.

The Connection Between Healthy Weight and BMI Range

Body Mass Index (BMI) is a commonly used tool to assess whether an individual is within a healthy weight range.

Calculated by dividing a person's weight in kilograms by the square of their height in meters, BMI provides a numerical value that categorizes individuals into various weight status groups—underweight, normal weight, overweight, and obese. Alongside BMI, considering ideal body weight can offer a more comprehensive perspective on an individual's health status.

The recommended healthy bmi range:

"The World Health Organization (WHO) recommends a healthy Body Mass Index (BMI) ideal range
of 18.5 to 25 for both men and women.

By using this range, one can determine a healthy weight for any given height"

Maintaining a BMI within the "normal" range is often associated with a reduced risk of various health problems, including cardiovascular diseases, diabetes, and certain cancers.

However, it is important to note that while BMI can be a helpful starting point, it does not account for factors such as muscle mass, bone density, and overall body composition. Therefore, alongside BMI and ideal body weight, other measures and professional medical advice should be considered to gain a comprehensive understanding of one's health.