How Ideal Body Weight is Calculated
Ideal Body Weight (IBW) formulas assume a baseline weight for a person standing 5 feet tall (60 inches), adding a fixed weight increment for every inch above 5 feet. The Ideal Body Weight Calculator India displays results across all major medical formulas.
The 4 Medical Formulas Explained
- Devine Formula (1974): Male: 50 kg + 2.3 kg per inch over 5ft | Female: 45.5 kg + 2.3 kg per inch over 5ft
- Robinson Formula (1983): Male: 52 kg + 1.9 kg per inch over 5ft | Female: 49 kg + 1.7 kg per inch over 5ft
- Miller Formula (1983): Male: 56.2 kg + 1.41 kg per inch over 5ft | Female: 53.1 kg + 1.36 kg per inch over 5ft
- Hamwi Formula (1964): Male: 48 kg + 2.7 kg per inch over 5ft | Female: 45.5 kg + 2.2 kg per inch over 5ft
Frequently Asked Questions
What is Ideal Body Weight (IBW) and how is it used medically?
Ideal Body Weight (IBW) was originally developed by medical researchers to estimate clearance rates for drug dosing and ventilator settings. Over time, it became a standard benchmark for identifying healthy target weights relative to skeletal height.
Which IBW formula is the most accurate?
The Devine Formula (1974) is the most widely recognized clinical standard used in hospitals and pharmacology. Robinson and Miller provided refined equations in 1983, which give very similar target ranges.