Ideal Body Weight Calculator
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Free Ideal Body Weight Calculator
Determining your "ideal" body weight isn't a one-size-fits-all answer. Medical professionals and nutritionists use several different scientific formulas to estimate the healthiest weight range for a person's height and gender. Our free Ideal Body Weight (IBW) Calculator processes your information through the four most popular medical formulas instantly.
How to Use the Calculator
- Choose your unit: Select between Imperial (feet/inches and lbs) or Metric (centimeters and kg). The height inputs will automatically adjust.
- Select your gender: Men and women have different bone densities and muscle mass baselines, so the formulas adjust accordingly.
- Enter your height: Input your accurate height.
- Click "Calculate": Our tool will instantly generate your ideal weight based on four historic formulas, plus your healthy BMI weight range.
- Clear Results: Use the "Clear Results" button to quickly reset the tool for another calculation.
Understanding the Formulas
Our comprehensive results panel gives you outputs for the following widely-used formulas:
- J. Devine (1974): Originally created to determine dosages for medications, it is now the most widely used formula for general ideal weight.
- J.D. Robinson (1983): A modification of the Devine formula to improve accuracy for taller individuals.
- D.R. Miller (1983): Another modification that tends to provide lower, slightly stricter weight estimates.
- G.J. Hamwi (1964): Often used to calculate ideal weight for individuals with diabetes.
- Healthy BMI Range: Based on the World Health Organization (WHO) recommendation that a healthy Body Mass Index falls between 18.5 and 24.9.
Medical Disclaimer: The results provided by this Ideal Body Weight Calculator are for informational and educational purposes only. They are estimates based on standard mathematical formulas and do not account for individual body composition, muscle mass, or specific health conditions. This tool does not provide medical advice, diagnosis, or treatment. Always consult with a qualified healthcare professional before making any changes to your diet, fitness routine, or overall health plan.