Ideal Weight Calculator
Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi medical formulas and healthy BMI range.
Body Measurements
Average Ideal Weight
Healthy BMI range (18.5–24.9): 115.1 – 154.9 lbs
Devine Formula
131.5 lbs
Robinson Formula
131 lbs
Formula Comparison Table
| Formula | Ideal Weight |
|---|---|
| Devine Formula (1974) | 131.5 lbs |
| Robinson Formula (1983) | 131 lbs |
| Miller Formula (1983) | 135.5 lbs |
| Hamwi Formula (1964) | 130.1 lbs |
| Normal BMI (18.5 – 24.9) Range | 115.1 – 154.9 lbs |
Estimate only — not medical adviceView details
Ideal weight formulas are population-level statistical estimates originally designed for clinical drug dosing. They do not account for muscle mass or body composition.
How it works
The Ideal Weight Calculator evaluates four major historical clinical formulas—Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964)—alongside the standard World Health Organization (WHO) healthy BMI weight range.
Most medical formulas use height over 5 feet (60 inches) and biological sex to estimate median healthy weight for medical drug dosing.
The tool averages these four formulas to give a balanced central target, while also displaying the full healthy BMI 18.5–24.9 weight window.
Body fat percentage and muscularity are not captured by these equations; use this as a reference baseline alongside body composition tools.
Frequently asked questions
- Which ideal weight formula is the most accurate?
- The Devine formula is the most widely cited in medical literature and pharmacology. Robinson and Miller adjusted Devine's coefficients based on broader population studies.
- Why do ideal weight formulas vary between men and women?
- Men typically have a higher bone density and higher average skeletal muscle mass percentage per unit of height than women, which these equations reflect.
- What if my weight is higher than the ideal weight number?
- Athletes and resistance-trained individuals naturally weigh more due to lean muscle mass. As long as your body fat percentage and metabolic markers are healthy, weighing more than formula estimates is common.
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- Calorie CalculatorEstimate maintenance calories from BMR and activity, then plan deficit or surplus targets for weight goals.
- TDEE CalculatorEstimate total daily energy expenditure by combining a BMR formula with your typical activity multiplier.