Health & Fitness
Ideal Weight Calculator
Calculate your ideal body weight using 4 established medical formulas. Compare results from Devine, Robinson, Miller, and Hamwi methods.
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Ideal Weight Range
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Formula Results
BMI-based Healthy Range
How is this calculated?
Formulas: Four established ideal body weight formulas (all use height in inches).
Height conversion: inches = cm / 2.54
Devine (1974):
Male: 50.0 + 2.3 × (inches − 60) kg
Female: 45.5 + 2.3 × (inches − 60) kg
Robinson (1983):
Male: 52.0 + 1.9 × (inches − 60) kg
Female: 49.0 + 1.7 × (inches − 60) kg
Miller (1983):
Male: 56.2 + 1.41 × (inches − 60) kg
Female: 53.1 + 1.36 × (inches − 60) kg
Hamwi (1964):
Male: 48.0 + 2.7 × (inches − 60) kg
Female: 45.5 + 2.2 × (inches − 60) kg
BMI-based range: 18.5 × height(m)² to 24.9 × height(m)²Calculation history
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Medical Disclaimer: This calculator provides estimates for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Consult a healthcare provider before making any decisions based on these results.
FAQ
Frequently asked questions
How accurate are ideal weight formulas?
Ideal weight formulas provide rough estimates based on height and gender. They were developed using population averages and don't account for muscle mass, bone density, body composition, or ethnic differences. Use them as a general reference, not a definitive health target.
Which ideal weight formula is best?
No single formula is universally "best." The Devine formula is most widely used in clinical settings (especially for drug dosing). Robinson and Miller are considered more realistic for modern populations. Using all four gives you a reasonable range to consider.
How is ideal weight different from BMI?
Ideal weight formulas give a single target weight based on height and gender. BMI provides a ratio of weight to height squared, categorizing you as underweight, normal, overweight, or obese. BMI-based healthy range (18.5–24.9) is shown alongside formula results for comparison.
Can ideal weight be different for athletes?
Yes. Athletes with high muscle mass may weigh significantly more than formula estimates while being perfectly healthy. These formulas don't distinguish between muscle and fat. Body composition analysis (DEXA, body fat %) gives athletes more useful targets.
Should I aim for my ideal weight?
These calculations are starting points for discussion with your healthcare provider. A healthy weight depends on many factors including age, body composition, medical history, and fitness level. Focus on overall health markers rather than hitting an exact number.