Health & Fitness
Estimate your healthy weight range using the Devine formula and compare with Robinson and Miller variants.
Devine Formula
70.5kg
155.3lb
The Devine formula estimates ideal body weight based on height and sex, commonly used in medical settings.
Ideal weight varies based on body composition, muscle mass, and individual factors. Consult a healthcare provider for personalized guidance.
An ideal weight calculator estimates what you should weigh based on medical formulas developed by health professionals. Unlike BMI, which uses only height and weight, ideal weight calculations account for body frame size and muscle mass, giving a more nuanced target for wellness.
The calculator applies three separate formulas (Devine, Hamwi, and Miller) that were designed by medical researchers to account for how weight distributes across different body types. Each formula starts with a base weight for a standard height, then adds or subtracts ounces per inch of height above or below that baseline. Results are adjusted for biological sex because men and women typically carry muscle and fat differently. The three estimates together create a healthy range rather than a single rigid target.
Devine Formula: Base + (Height - 60) × 2.3 lbs | Hamwi Formula: Base + (Height - 60) × 2.2 to 2.7 lbs | Miller Formula: Base + (Height - 60) × 1.9 lbsBase weight varies by sex (around 110 lbs for women, 106 lbs for men). Height is measured in inches above 5 feet, and each formula uses a different multiplier to account for how quickly weight should increase with height. The three different multipliers reflect varying assumptions about body frame and composition.
| Input | Result | Notes |
|---|---|---|
| Female, 5'6" tall (66 inches), average frame | 118–130 lbs across the three formulas | Someone 6 inches above the baseline (5') adds roughly 14–16 lbs total, reflecting normal muscle and bone distribution for women. |
| Male, 5'10" tall (70 inches), average frame | 165–184 lbs across the three formulas | Men's baseline is higher and the per-inch multiplier is larger, accounting for greater average muscle mass. |
| Female, 5'2" tall (62 inches), small frame | 104–108 lbs (lower end of range) | Shorter heights and smaller frames produce lower targets. A 4-inch reduction from baseline (60 inches) subtracts about 9–11 lbs. |
Each formula was developed by different researchers with slightly different assumptions about how height scales with weight. The Devine formula is simpler; Hamwi allows for frame size; Miller uses a smaller multiplier. Using all three gives you a realistic range rather than betting on one researcher's model.
Ideal weight is an estimate based on height and sex. Healthy weight is broader and includes your fitness level, muscle mass, bone density, and how you feel. You can be healthy above or below the ideal range if your body composition is good.
Check that you've entered your height and sex correctly. If you're muscular, the range may be on the low side—consider your body fat percentage or waist-to-hip ratio instead. If the range still feels wrong, consult a doctor, as individual variation is real and medical factors matter.
The Devine, Hamwi, and Miller formulas don't explicitly adjust for age, but age does affect body composition—you may naturally carry more fat as you age. If age is a concern, combine this tool with your doctor's guidance.
The standard formulas don't account for pregnancy weight gain (typically 25–35 lbs) or breastfeeding increases. Talk to your doctor about your healthy weight during and after pregnancy rather than relying solely on this calculator.
Celebrities often have professional lighting, camera angles, and sometimes very low body fat percentages that aren't ideal or sustainable for most people. Ideal weight formulas are based on health research, not entertainment industry standards.