Ideal Body Weight Calculator

How to use

1. Select your biological sex.
2. Enter standing height in centimeters.
3. Enter current weight to benchmark your status.
4. Compare results across 4 established clinical equations.
5. Review your recommended healthy weight band based on normal BMI (18.5–24.9).

Comparison of clinical Ideal Body Weight equations

• Devine Formula (1974) — widely adopted in clinical pharmacology to compute drug clearance and therapeutic dosing.
• Robinson Formula (1983) — calibrated empirical modification based on revised metropolitan population samples.
• Miller Formula (1983) — provides adjusted weight projections particularly favorable for short-to-medium statures.
• Hamwi Formula (1964) — historic benchmark utilized extensively in diabetes management and clinical dietetics.

Healthy weight span according to WHO criteria

The World Health Organization classifies a normal adult weight span within Body Mass Index (BMI) values between 18.5 and 24.9 kg/m².

For instance, an adult measuring 175 cm (5'9") has a healthy weight bracket between 56.7 kg and 76.3 kg (125–168 lbs), allowing broad latitude for frame size, bone density, and muscle mass.

Why ideal weight is not a single absolute number

• Tissue composition: high athletic muscularity easily skews scale weight above theoretical formulas without excess body fat.
• Skeletal frame: wrist circumference delineates small, medium, and heavy skeletal builds.
• Age: slightly elevated weight in later adulthood protects against sarcopenia and hip fracture morbidity.

Practical guidance for weight management

• Pair scale weight monitoring with waist-to-height ratio to assess metabolic visceral fat.
• Adopt sustainable habits: balanced whole-food nutrition, adequate protein, and quality sleep.
• Incorporate resistance training to preserve lean mass during weight reduction.