Ideal Weight Calculator

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

Result

Average Ideal Weight

146lbs
Healthy Range (BMI)
118 - 159 lbs

Formula Comparison

Clinical Ranges

Ideal Body Weight (IBW) formulas are used by clinicians to estimate doses for certain medications. The average shown here is based on Devine, Robinson, Miller, and Hamwi formulas.

Note on BMI

The Healthy Range (118-159 lbs) is calculated using a standard BMI of 18.5 to 24.9. This range is often more applicable to the general population than specific formulas.

Calculation Complete

An ideal weight calculator estimates a healthy target weight based on your height, gender, and frame size using multiple well-known formulas.

Enter your sex and height. You can optionally add your current weight and body frame (small, medium, large). Click Calculate to see healthy weight ranges from several common formulas (e.g. Devine, Robinson) and the BMI 18.5–24.9 range. Use the results as a general guide, not a strict target.

Examples

Average Height Male

A 5'10" male typically has an ideal weight range centered around 165 lbs.

Average Height Female

A 5'4" female typically has an ideal weight range centered around 125 lbs.

Frequently Asked Questions

Which formula is most accurate?
Most medical professionals use the Devine or Robinson formulas, but the average of all four provides a more balanced outlook.
What is frame size?
Frame size accounts for bone density and muscle potential, often measured by wrist circumference.

Sources

  1. Adult BMI categories — Centers for Disease Control and Prevention (CDC)
  2. Pai, M. P., Paloucek, F. P. (2000). "The origin of the ‘ideal’ body weight equations." Annals of Pharmacotherapy 34(9) — Annals of Pharmacotherapy
Related Calculators
BMI Calculator
Body Fat Percentage Calculator
Calorie Calculator

Quick Tips

  • •Use the average of multiple formulas rather than relying on a single one for a more balanced estimate.
  • •Consider body composition — a muscular person may weigh more than the "ideal" and still be healthy.
  • •Consult a healthcare provider for a personalized healthy weight assessment.