Ideal Weight Calculator
The Ideal Weight Calculator helps you estimate a healthy body weight based on your height and sex. It compares several well-known formulas to give you a realistic ideal weight range, rather than relying on a single fixed number.
Because body composition, muscle mass, and frame size vary from person to person, ideal weight should be viewed as a general guideline, not a strict target. For best insight, it’s recommended to look at ideal weight, BMI, body fat percentage, and calorie needs together.
Ideal Weight Calculator
Estimate your ideal body weight using popular formulas and see a healthy weight range based on BMI (18.5–25).
Recommended range
Ideal weight by formula
| Formula | Ideal Weight (kg) |
|---|---|
| Devine (1974) | — |
| Hamwi (1964) | — |
| Robinson (1983) | — |
| Miller (1983) | — |
Healthy weight range (BMI 18.5–25)
🔹 How the Ideal Weight is Calculated
This calculator compares multiple widely used formulas side by side:
Devine Formula (1974) – originally developed for medical dosage calculations
Hamwi Formula (1964) – commonly used in clinical settings
Robinson Formula (1983) – a refinement of earlier methods
Miller Formula (1983) – another variation based on Devine’s work
In addition, the calculator shows a healthy weight range based on BMI (18.5–25) as recommended by the World Health Organization (WHO). This provides useful context for understanding how your ideal weight compares to general health standards.
🔹 Why Results Can Vary
No single formula can perfectly define an ideal weight for everyone. Factors such as:
Muscle mass
Body fat distribution
Bone structure
Fitness level
can all influence what weight feels healthy and sustainable for you. Two people of the same height and sex may have very different healthy weights — and both can be perfectly healthy.
🔹 Ideal Weight vs BMI
While BMI is useful for identifying general weight categories, it does not account for muscle mass or body composition. Ideal weight formulas focus only on height and sex, which makes them easy to use but also limited.
For best insight, it’s recommended to look at ideal weight, BMI, body fat percentage, and calorie needs together rather than relying on a single number.
What is an ideal weight?
Ideal weight is an estimated healthy body weight based on height and sex. It is meant as a general guideline, not an exact target.
Why do different formulas give different results?
Each formula was developed using different research and assumptions. Some were created for medical use, while others aim to reflect average body proportions, which is why results may vary slightly.
Is ideal weight the same as BMI?
No. BMI is a ratio of weight to height and does not account for muscle mass or body composition. Ideal weight formulas estimate a target weight based only on height and sex.
How accurate is the Ideal Weight Calculator?
The calculator provides estimates, not medical advice. Muscle mass, bone structure, fitness level, and overall health can all influence what a healthy weight looks like.
Should I aim to reach my ideal weight exactly?
Not necessarily. Many people are healthy outside their calculated ideal weight range. Use the result together with BMI, body fat percentage, and calorie needs for better insight.
🔹 About the Ideal Weight Calculator
The Ideal Weight Calculator helps you estimate a healthy body weight based on your height and sex. It uses several well-known formulas developed over decades to provide a realistic ideal weight range, rather than a single fixed number.
Because body composition, muscle mass, and frame size vary from person to person, ideal weight should be viewed as a guideline, not a strict target. This calculator is designed to give you a quick, informative overview that works well together with other health metrics such as BMI, BMR, and body fat percentage.
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