Ideal Body Weight (IBW) Calculator
Last Updated: 8 April 2026
What is Ideal Body Weight Calculator?
The Mathematical Formula
Devine (Male) = 50kg + 2.3kg per inch over 5ft Devine (Female) = 45.5kg + 2.3kg per inch over 5ft
📊 Practical Example
"A 5'7" male has an Ideal Body Weight (Devine) of ~66.1 kg. His healthy BMI range (18.5-22.9) is ~59kg to ~73kg."
⚠️ Common Mistake
Frequently Asked Questions
Q.Which formula is the most accurate?
The Devine formula is the most widely used in clinical settings for medicinal dosing. However, the Miller and Robinson formulas are also respected and provide localized statistical averages.
Q.Why is the Ideal Weight based on height?
Height is the strongest structural predictor of the mass an individual's frame can support while maintaining low metabolic risk.
Q.What if I am heavier than my ideal weight but have low body fat?
These formulas do not distinguish between muscle and fat. If you have significant muscle mass (e.g., an athlete), your 'ideal' weight will be higher than what these formulas suggest.
Q.Are these standards different for Indians?
Yes. While the Devine formula is global, the health 'range' provided here follows the Asian BMI standard (Normal: 18.5 - 22.9) because Indians have a higher risk of metabolic disease at lower weights compared to Westerners.