Ideal Weight Calculator – Find Your Optimal Weight
Table of Contents
- 1 What Is Ideal Body Weight?
- 2 How Ideal Weight Formulas Work
- 3 Ideal Weight vs. BMI – What’s the Difference?
- 4 How to Interpret Calculator Results
- 5 Is Ideal Weight the Same for Everyone?
- 6 How Our Ideal Weight Calculator Works
- 7 Example of Using the Calculator
- 8 Why Knowing Your Ideal Weight Matters
Do you want to know what weight is optimal for your health and body composition?
Our Ideal Weight Calculator allows you to easily estimate your target weight based on height, gender, and BMI calculation formula.
This practical tool helps determine whether your current body weight falls within a healthy range.
What Is Ideal Body Weight?
Ideal body weight represents the range of body mass associated with optimal health outcomes for a specific height and body type.
Medical professionals use ideal weight calculations to assess nutritional status, determine medication dosages, and identify potential health risks.
This concept differs from average weight, which merely shows how much most people weigh without considering health implications.
There are several scientifically validated formulas used to calculate ideal weight:
- Devine Formula – the gold standard in clinical medicine.
- Robinson and Miller Formulas – modifications of Devine’s method.
- Broca Index – a quick method for rapid estimation of ideal weight.
- Hamwi Formula – developed for patients with diabetes.
- Peterson Formula – incorporates target BMI for personalized goals.
- Potton Formula – a simple formula accounting for gender differences.
How Ideal Weight Formulas Work
Each formula uses different assumptions, but all aim to define a healthy weight range relative to height.
- Devine: Men: 50 kg + 2.3 kg × (height in inches − 60), Women: 45.5 kg + 2.3 kg × (height in inches − 60).
- Robinson: Men: 52 kg + 1.9 kg × (height in inches − 60), Women: 49 kg + 1.7 kg × (height in inches − 60).
- Miller: Men: 56.2 kg + 1.41 kg × (height in inches − 60), Women: 53.1 kg + 1.36 kg × (height in inches − 60).
- Broca: height (cm) − 100 (for women subtract an additional 10%).
- Hamwi: Men: 48 kg + 2.7 kg × (height in inches − 60), Women: 45.5 kg + 2.2 kg × (height in inches − 60).
- Peterson: considers BMI and personal health goals.
- Potton: Women: (height − 100) × 0.9, Men: (height − 100) × 0.95.
Ideal Weight vs. BMI – What’s the Difference?
Although BMI (Body Mass Index) and ideal weight are often used interchangeably, they measure different aspects of body composition.
BMI shows the ratio of total body mass to height, without accounting for the proportion of fat and muscle. Ideal weight defines a healthy weight range that supports optimal bodily function.
Key differences:
- BMI – a quick indicator of total mass; does not reflect body composition.
- Ideal weight – considers height, gender, and often the proportion of muscle to fat.
- A muscular person may have a high BMI, yet their ideal weight can still fall within a healthy range.
How to Interpret Calculator Results
Once you calculate your ideal weight, you can quickly assess your physical status.
Results indicate whether your weight is below, within, or above the optimal range.
- Ideal weight (by chosen formula) – your health target.
- Current BMI – allows comparison with health norms.
- Minimum and maximum range – boundaries of a healthy weight.
- Weight difference – shows how many kilograms you may need to gain or lose.
Is Ideal Weight the Same for Everyone?
No, ideal weight depends on multiple factors:
- Gender – women naturally have more body fat than men.
- Height – taller individuals have a higher healthy weight range.
- Body composition – muscular individuals may weigh more while remaining healthy.
- Health or fitness goals – different formulas can be tailored to personal needs.
That’s why our calculator takes gender and height into account, and multiple formulas allow you to adjust results to your profile.
How Our Ideal Weight Calculator Works
Simply enter the basic data:
- Gender – biological differences affect results.
- Height – the main factor determining weight.
- Current weight – for comparison with ideal body mass.
- Default BMI (22) – average value of a healthy BMI.
After entering the data, the calculator provides:
- Ideal weight according to the selected formula
- Current BMI
- Minimum and maximum healthy weight range
- Weight difference in kilograms
Example of Using the Calculator
Input Data:
- Gender: Male
- Height: 178 cm
- Weight: 78 kg
- Default BMI: 22
Results:
- Ideal weight (Devine): 73.2 kg
- Current BMI: 24.6
- Minimum range: 58.6 kg
- Maximum range: 78.9 kg
- Weight difference: +4.8 kg
Why Knowing Your Ideal Weight Matters
Being aware of your ideal weight helps you manage health, improve well-being, and plan a healthy lifestyle.
Main benefits:
- Better health management – reduces the risk of chronic diseases.
- Increased energy and well-being – healthy weight supports overall bodily function.
- Safe weight loss or gain – based on realistic goals rather than diet trends.
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Based on 1 source
- 1. Thompson, W. R. (Ed.). (2023). ACSM’s Guidelines for Exercise Testing and Prescription (11th ed.). Wolters Kluwer.
Ideal Weight Calculator – Find Your Optimal Weight - FAQ
To calculate ideal body weight, use the Devine formula for the most accurate medical standard. For men, start with 50 kg and add 2.3 kg for each inch over 5 feet tall. For women, start with 45.5 kg and add 2.3 kg per inch over 5 feet. Alternatively, you can calculate the weight that would give you a BMI of 18.5 to 24.9 for your height, as this represents the healthy weight range.
Your healthy weight depends on your height and creates a range rather than a single number. For example, at 5 feet 4 inches, healthy weight ranges from 110 to 145 pounds. At 5 feet 8 inches, the range extends from 125 to 165 pounds. At 6 feet, healthy weight spans 140 to 185 pounds. These ranges correspond to a BMI between 18.5 and 24.9, which represents optimal health for most adults.
For adults aged 20 to 65, a BMI between 18.5 and 24.9 indicates healthy weight. This range applies across adult ages, though some flexibility exists. Adults over 65 may maintain good health with slightly higher BMI values, between 25 and 27, as research suggests this provides beneficial reserves during illness and may reduce fracture risk. Children and teenagers require age and gender-specific BMI percentile ranges rather than these adult values.
Different ideal weight formulas were developed for different purposes using different populations and methods. Devine's formula was created for medication dosing calculations. Robinson's and Miller's formulas refined Devine's work. Broca's Index offers simplicity for quick estimates. Hamwi's formula was designed for diabetic patients. These varying origins explain why they produce different results, typically within 5-10 kg of each other. The Devine formula remains the clinical standard, but all validated formulas provide reasonable estimates.
Muscle mass significantly impacts ideal weight because muscle weighs more than fat per unit volume. Athletes and people who engage in regular strength training often weigh more than standard ideal weight calculations suggest while maintaining excellent health. Their body composition, with higher muscle and lower fat percentages, makes them healthier despite weighing more. Body fat percentage provides a more accurate health assessment than weight alone for muscular individuals.
