An ideal-weight formula is not a universal answer or a promise of a particular appearance. This calculator compares the Devine, Robinson, Miller, and Hamwi equations and shows a median estimate alongside a BMI-based range. Comparing formulas is useful because each was developed from different assumptions and none fully captures muscle mass, frame size, age, ethnicity, or health history.
Use the results as broad reference points for a conversation about goals, not as a requirement to reach the lowest number. Waist circumference, body composition, blood pressure, metabolic markers, strength, energy, and how sustainable a routine feels can be more informative than one target weight. A flexible range is often more realistic because body weight naturally changes with hydration, glycogen, digestion, and training.
The Devine, Robinson, Miller, and Hamwi equations use different historical assumptions. Showing them together makes their spread visible instead of implying that one formula is universally correct.
No. The median is a convenient summary of several estimates, not a clinical prescription. Health also depends on body composition, waist size, fitness, labs, age, and personal circumstances.
Yes. Bone structure and lean mass can make a healthy weight sit above or below a formula estimate. This is one reason to use a range and include other measures rather than pursuing one exact number.
Ask a qualified professional when you have a medical condition, a history of disordered eating, pregnancy, major weight changes, or uncertainty about a safe nutrition and activity plan.