Which formula should I trust most?

No single formula is universally best. The BMI range reflects population-level guidelines, while the Devine formula is widely used in clinical settings for drug dosing. Using the average of all formulas gives a balanced estimate.

Why do the formulas give different results?

Each formula was developed from a different study population and designed for a different clinical purpose. Small differences in the underlying sample populations lead to slightly different outputs for the same inputs.

Does healthy weight account for muscle mass?

No. All of these formulas are based solely on height and do not account for body composition. A heavily muscled person may fall above the healthy weight range while still having low body fat.

Is being at the low end of the range better?

Not necessarily. Being underweight carries its own health risks, including bone density loss and nutritional deficiencies. The middle of the healthy weight range is generally a safer target than the lower bound.

How is this different from the BMI calculator?

The BMI calculator takes your current weight and height and tells you your BMI category. This calculator works in reverse — it takes your height and tells you what weight range corresponds to a healthy BMI.

Health

↵ to calculate

Healthy Weight Calculator - BMI Ideal Weight Range

Find your healthy weight range based on height using BMI, Devine, Robinson, Miller, and Hamwi formulas.

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How to use this calculator

👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉

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In plain English — what does this do?

🏋️ Your body needs food to move, breathe, and grow — just like a car needs petrol. This tool helps you find out how much food your body needs in a day to feel good and stay healthy!

📌 Direct Answer & Summary

A healthy weight calculator estimates the weight range considered normal or ideal for a given height. This tool uses both the BMI-based healthy range (18.5 to 24.9) and four clinical formulas — Devine, Robinson, Miller, and Hamwi — to give a comprehensive picture. Each formula was developed for different clinical contexts, so comparing them provides a more balanced estimate.

Sex

Height

What is Healthy Weight Calculator - BMI Ideal Weight Range?

How to use it

1️⃣ Select your biological sex, as the formulas differ by sex.
2️⃣ Enter your height and choose centimetres or inches.
3️⃣ The main result shows the BMI-based healthy weight range for your height.
4️⃣ Review the formula estimates below for additional reference points.
5️⃣ Use the average of all formulas as a practical midpoint target.

Formula

BMI range: Weight (kg) = BMI x Height (m)^2, using BMI 18.5 to 24.9 | Devine (male): 50 + 2.3 x (height in inches - 60)

💡 See it in action — a real example

For a 175 cm male, the healthy BMI range gives approximately 56.6 to 76.2 kg. The Devine formula estimates 72.7 kg, Robinson gives 74.2 kg, Miller gives 74.0 kg, and Hamwi gives 75.7 kg. The average of these four formulas is about 74.2 kg.

❓ Common questions

Which formula should I trust most?: No single formula is universally best. The BMI range reflects population-level guidelines, while the Devine formula is widely used in clinical settings for drug dosing. Using the average of all formulas gives a balanced estimate.
Why do the formulas give different results?: Each formula was developed from a different study population and designed for a different clinical purpose. Small differences in the underlying sample populations lead to slightly different outputs for the same inputs.
Does healthy weight account for muscle mass?: No. All of these formulas are based solely on height and do not account for body composition. A heavily muscled person may fall above the healthy weight range while still having low body fat.
Is being at the low end of the range better?: Not necessarily. Being underweight carries its own health risks, including bone density loss and nutritional deficiencies. The middle of the healthy weight range is generally a safer target than the lower bound.
How is this different from the BMI calculator?: The BMI calculator takes your current weight and height and tells you your BMI category. This calculator works in reverse — it takes your height and tells you what weight range corresponds to a healthy BMI.

⚡ Related Health Tools & Calculators

BMI Calculator Ideal Weight Calculator Body Fat Calculator Lean Body Mass Calculator