About This Tool
The Ideal Weight Calculator estimates your ideal body weight range based on height and sex using the most widely used medical formulas: Devine, Robinson, Miller and Hamwi.
Frequently Asked Questions
Which ideal weight formula is most accurate?
No single formula is universally best. The Devine formula is most commonly used clinically, but all are approximations. Ideal weight varies greatly by body composition.
Why do the four formulas give different results?
Each formula was developed independently using different study populations and methodologies, so minor differences in results are expected.
Should I aim to hit my ideal weight exactly?
These formulas give rough estimates only. A healthy weight range (based on BMI 18.5–24.9) is often a more practical goal. Always consult a doctor.