Verified Mathematical Model & Formulation
Devine (Men): 50 kg + 2.3 kg per inch over 5 feet Devine (Women): 45.5 kg + 2.3 kg per inch over 5 feet Robinson (Men): 52 kg + 1.9 kg per inch over 5 feet Hamwi (Men): 48 kg + 2.7 kg per inch over 5 feet WHO Normal BMI Weight: 18.5 × (height_m)² to 24.9 × (height_m)²
Computes target biological body weight utilized by pharmacologists and clinicians to determine safe drug dosing, ventilator settings, and nutritional baselines.
Configurable Parameters & Standard Units
- Biological Sex (1=Male, 2=Female): (Default: 1 count)
- Height (cm): (Default: 175 cm)
Standard Worked Example & Practical Verification
Scenario: Evaluating ideal body weight for a male measuring 178 cm (70.1 inches, or 10.1 inches over 5 feet).
Practical Takeaway: All 4 clinical formulas cluster between 71 kg and 75 kg for a 178 cm adult male.
Frequently Asked Questions
Why do clinicians use Ideal Body Weight (IBW)?
IBW provides a standardized baseline for dosing water-soluble pharmaceutical drugs (such as aminoglycosides or anesthetics) that do not distribute into excess adipose tissue.
Can an athlete weigh more than their IBW and still be healthy?
Yes. IBW formulas do not distinguish between fat mass and dense skeletal muscle mass. Muscular athletes often exceed IBW while maintaining low body fat percentages.