Find your ideal weight range using multiple scientific formulas.
This calculator estimates ideal body weight using four well-known medical formulas — Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964) — plus a healthy BMI-based range. Each formula was developed in a clinical context to guide drug dosing and health assessments.
Four medical formulas
Devine, Robinson, Miller, and Hamwi compared side by side.
BMI-based range
See the healthy weight range based on BMI 18.5–24.9.
Gender-specific
Each formula uses different coefficients for men and women.
Metric & imperial
Results displayed in your preferred unit.