Ideal Weight Calculator

Computes ideal body weight ranges for men and women across popular clinical formulas (Devine, Robinson, Miller, Hamwi) and standard healthy BMI ranges.

Body & Weight• Devine & Robinson Equations

Ideal Weight Calculator

Compute your ideal body weight based on Devine, Robinson, Miller, and Hamwi equations.

Gender

Height50 – 250 cm

Ideal Body Weight SpectrumHealthy Target

75kg

Healthy Target

Below Ideal Range

43-56.7

Healthy Target

56.7-76.3

Above Ideal Range

76.3-103

Devine Formula70.5 kg

Robinson68.9 kg

Miller68.7 kg

Hamwi72 kg

Evidence-based estimations. Consult a physician for personalized guidance.

Clinical Formula & Calculation Standard

Official clinical definitions and validated mathematical models

Clinical Ideal Body Weight (IBW) Equations

Devine (1974): Men 50.0 + 2.3 × (H_in - 60) | Women 45.5 + 2.3 × (H_in - 60) Robinson (1983): Men 52.0 + 1.9 × (H_in - 60) | Women 49.0 + 1.7 × (H_in - 60) Miller (1983): Men 56.2 + 1.41 × (H_in - 60) | Women 53.1 + 1.36 × (H_in - 60) Hamwi (1964): Men 48.0 + 2.7 × (H_in - 60) | Women 45.5 + 2.2 × (H_in - 60)

Ideal Body Weight formulas were developed for pharmacological dosing (such as aminoglycosides and anesthesia) and clinical nutritional assessment based on height over 5 feet (60 inches).

Clinical Insights & Practical Usage

The Devine formula is the most widely cited in clinical pharmacology and hospital medication guidelines.
Healthy BMI range (18.5 – 24.9 kg/m²) provides an evidence-based population target independent of height-above-5-feet assumptions.
Frame size adjustments (small, medium, large wrist circumference) typically shift baseline target weight by ±5% to ±10%.

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