Ideal Weight Calculator — IBW by Devine, Robinson, Miller & Hamwi
Free ideal weight calculator showing 4 formulas (Devine, Robinson, Miller, Hamwi) plus a BMI-based healthy range. Enter height in metric or imperial units.
There is no single universally agreed ideal body weight — different formulas give different answers. That's why we show all four major formulas side by side, plus your healthy weight range from BMI as a cross-check.
These formulas are most reliable for adults between 5 ft (152 cm) and 6 ft 5 in (196 cm).
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Need to plan your daily nutrition and hydration? Based on your weight, you can estimate your needs with our Water Intake Calculator and Protein Intake Calculator.