Find your ideal body weight range using our free calculator. Based on your height, gender, and frame size, this tool calculates your healthy weight range using multiple proven formulas — including Devine, Robinson, Miller, and Hamwi.
Ideal Weight Calculator
By Formula:
These are estimates. Consult a healthcare provider for personalized guidance.
How Ideal Weight Is Calculated
There is no single “ideal” weight formula. This calculator uses four commonly cited medical formulas. The Devine formula (1974) is widely used in clinical settings for medication dosing. Robinson (1983) and Miller (1983) are refinements. Hamwi (1964) is another standard used by dietitians.
Examples
- 5’7″ male: Ideal range ≈ 138–166 lbs (62.7–75.3 kg)
- 5’4″ female: Ideal range ≈ 108–136 lbs (49.1–61.6 kg)
- 6’0″ male: Ideal range ≈ 160–196 lbs (72.6–89 kg)
Frequently Asked Questions
Is ideal weight the same as healthy weight?
Not exactly. “Ideal weight” formulas from the 1960s–80s were developed for clinical dosing purposes, not as beauty standards. A healthy weight range is broader and also depends on body composition, muscle mass, and overall health. BMI is another common reference, though it has its own limitations.
What is the Devine formula for ideal weight?
For males: 50 kg + 2.3 kg per inch over 5 feet. For females: 45.5 kg + 2.3 kg per inch over 5 feet. Example: a 5’10” male → 50 + (2.3 × 10) = 73 kg (161 lbs).
How do I know if my weight is healthy?
Use multiple indicators: BMI (18.5–24.9 is normal), waist circumference (under 35″ for women, under 40″ for men), body fat percentage, and energy levels. No single number tells the full story — consult a healthcare provider for a complete assessment.
Does ideal weight change with age?
Most ideal weight formulas don’t account for age, but research suggests that slightly higher BMI ranges (overweight by traditional standards) may be associated with lower mortality in older adults. The relationship between weight and health becomes more nuanced with age.
What if I’m very muscular — will the formula still apply?
No. These formulas don’t distinguish between fat mass and muscle mass. A highly muscular person may weigh more than the “ideal” range but still be in excellent health. Body composition measurements (like DEXA scans or body fat calipers) give a more accurate picture.