Ideal Body Weight (IBW) Calculator

What is Ideal Body Weight (IBW) Calculator?

Ideal Body Weight (IBW) is a clinical reference benchmark used by healthcare professionals and dietitians to estimate healthy baseline weight, establish pharmaceutical dosing guidelines, and guide nutritional planning. Our Ideal Body Weight Calculator computes your recommended weight across four classical medical equations—Devine, Robinson, Miller, and Hamwi—alongside standard WHO BMI healthy weight bounds.

Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.

How to Use the Ideal Body Weight (IBW) Calculator

1. 1
   Select your Biological Sex and Measurement Unit System (Metric cm/kg or Imperial ft/in/lbs).
2. 2
   Input your Height measurement accurately.
3. 3
   Review the calculated ideal weight recommendations across the 4 medical formulas: Devine, Robinson, Miller, and Hamwi.
4. 4
   Compare the clinical formula averages against the standard WHO Healthy BMI weight range (18.5–24.9 kg/m²) for your height.

Formula & Calculation Logic

Calculates clinical IBW benchmarks based on height in inches above 60 inches (5 feet), comparing Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964) historical anthropometric equations.