What is the most accurate ideal weight formula?

No single formula is universally accurate. Devine is used in clinical dosing; Hamwi is most widely used in nutritional practice. Using the average of multiple formulas provides the most balanced estimate.

Is ideal weight the same as healthy weight?

Ideal weight formulas give a target range based on height, but healthy weight also depends on muscle mass, bone density, and body composition. A normal BMI range (18.5–24.9) is another common reference.

Ideal Weight Calculator

Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas.

Units

Metric

Imperial

Sex

Male

Female

Height (cm)

Average Ideal Weight

70.1 kg

Range: 68.7 kg – 72.3 kg

Formula	Ideal Weight	Note
Devine (1974)	70.5 kg	Most widely used clinically
Robinson (1983)	68.9 kg	Commonly used in pharmacy
Miller (1983)	68.7 kg	Higher baseline, lower increment
Hamwi (1964)	72.3 kg	Traditional rule of thumb

These formulas estimate "ideal" weight based on height alone. Individual factors such as muscle mass, frame size, age, and ethnicity are not accounted for. A healthy BMI range (18.5–24.9) for your height is 56.7 kg – 76.3 kg.

Ideal Weight Calculator

The Ideal Weight Calculator uses four established clinical formulas to estimate a healthy target weight based on height and sex.

Formulas compared

Devine (1974): Developed for medication dosing. Male: 50 + 2.3 kg per inch over 5 ft.
Robinson (1983): Refined Devine for pharmacokinetics.
Miller (1983): Uses a higher base weight with a smaller per-inch increment.
Hamwi (1964): Traditional rule: 48 kg (women) or 45.4 kg (men) for 5 ft, +2.7/2.3 kg per inch.

No single formula is universally correct. The healthy BMI range (18.5–24.9) often gives the most useful real-world target range.