Modern vs. classic research
Robinson and Miller adapt to modern body frames, while Devine and Hamwi reflect hospital dosing ranges. Averaging them keeps your target practical for today’s lifestyles.
Why four formulas?
Robinson, Miller, Devine, and Hamwi each emerged from different clinical populations. Viewing them together shows a realistic band of healthy body weights instead of a single “perfect” number.
Interpret with BMI
Each formula translates to a BMI score—highlighting whether the suggested weight stays inside the evidence-backed 18.5–24.9 window.
Fuel strength, not thinness
Use the midpoint as a conversation starter with your clinician or coach. It should support energy, strength, and vitality—not force you into an unsustainable deficit.
Next steps for a sustainable goal weight
Common questions
- Which ideal weight formula should I follow?
- Treat the average of Robinson, Miller, Devine, and Hamwi as a range, then tailor it with your clinician based on muscle mass and medical history.
- How do I choose a realistic goal weight?
- Aim for a weight that supports energy, lab markers, and lifestyle. Use the midpoint as a starting point, then adjust in 5% increments until it feels sustainable.