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Ideal Weight Calculator

Calculate your ideal body weight using four established formulas: Devine, Robinson, Miller, and Hamwi. See your healthy weight range.

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Your Height

Ideal Weight Range

Ideal Range

155.0 - 165.3 lbs

Average: 159.4 lbs

Devine

160.9 lbs

Robinson

156.5 lbs

Miller

155.0 lbs

Hamwi

165.3 lbs
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How to Use Ideal Weight Calculator

  1. 1

    Select gender

    Choose male or female for gender-specific formulas.

  2. 2

    Enter height

    Enter your height in feet/inches or centimeters.

  3. 3

    View range

    See ideal weight from four different medical formulas.

  4. 4

    Compare results

    Use the range of values as a healthy weight target.

Frequently Asked Questions

This calculator uses four well-known formulas: Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964). Each was developed from clinical data and provides slightly different ideal weight estimates.

No single formula is perfect. The Devine formula is most commonly used in medicine for drug dosing. Looking at the range from all four formulas gives a more realistic healthy weight target.

Ideal weight formulas provide estimates based on height and gender only. They don't account for muscle mass, bone density, or body composition. A person with more muscle may weigh more than their 'ideal' weight and still be very healthy.

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Where Ideal Weight Formulas Come From

The four formulas in this calculator were each developed from different clinical datasets. The Devine formula (1974) was originally created for drug dosing calculations, not weight assessment — yet it became the most widely used in medicine. Robinson (1983) and Miller (1983) updated Devine's work with broader population data. Hamwi (1964) is the oldest and simplest, using a fixed weight per inch of height above 5 feet.

Why the Formulas Disagree

Each formula produces a different number because they were derived from different populations and methodologies. For a 5'10" male, estimates range from about 149 lbs (Miller) to 166 lbs (Devine) — a 17-pound spread. Rather than picking one number, use the range as a zone. If all four formulas agree you are significantly above the range, that is a stronger signal than if you are 5 pounds above just one formula's estimate.

The Limits of Height-Based Weight Targets

These formulas use only height and gender — they cannot account for muscle mass, bone density, frame size, or ethnicity. A 5'10" competitive swimmer, a sedentary office worker, and a powerlifter of the same height will have very different healthy weights. Body composition measurements (body fat percentage, lean mass) provide a more individualized and meaningful target than any height-based formula.