Ideal Body Weight & Height Calculator

Gender

Height

Frame Size

Current Weight (optional — to show how far you are)

About the Ideal Weight Calculator

Ideal body weight is an estimate of a healthy target weight based on height and gender, calculated using multiple validated medical formulas. Rather than relying on a single number, this calculator shows results from four scientific methods — Hamwi, Devine, Robinson, and Miller — along with the healthy BMI weight range, so you can see the full picture. Frame size adjustments account for individual differences in bone structure.

How to Use

Select your gender and enter your height (cm or inches)
Choose your frame size — small, medium, or large
Optionally enter your current weight to see how it compares to the ideal range
Click Calculate to view ideal weight estimates from all four formulas and the BMI range

Formula Used

Hamwi: Men 48 + 2.7/cm over 152
Women: 45.4 + 2.27/cm over 152

Devine: Men 50 + 2.3/inch over 5ft
Women: 45.5 + 2.3/inch over 5ft

BMI Range: Weight = BMI × H(m)²
Healthy BMI = 18.5 – 24.9

All results in kg. Frame size applies a ±10% adjustment to the BMI-based range to account for body structure variation.

Understanding Your Results

Ideal Weight Range The healthy weight span derived from BMI 18.5–24.9, adjusted for your frame size. Most people should aim to fall within this range.

BMI 22 Target The midpoint of the healthy BMI range (22), representing the optimal target weight associated with the lowest risk of weight-related health issues.

Comparison Shows how your current weight compares to the ideal range — whether you are within range, and by how many kg you are above or below it.

Medical Disclaimer

This calculator provides estimates for general informational purposes only. Results are not a substitute for professional medical advice. Consult a qualified healthcare provider for personalized guidance.

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