Ideal Weight Calculator

A healthy weight range based on height, age and gender.

Overview

Estimates healthy body weight ranges based on clinical epidemiological equations including Devine, Robinson, Miller, and Hamwi formulas.

Formula & Calculation Method

Devine Formula: Men = 50 kg + 2.3 kg per inch over 5 feet | Women = 45.5 kg + 2.3 kg per inch over 5 feet

Calculates the statistical midpoint weight associated with minimum all-cause mortality for a given adult height and biological frame.

Worked Example: 5'10" Male (70 inches tall)

Inputs: Sex = Male | Height = 5 feet 10 inches (10 inches above 5 feet)

  • Base weight at 5 feet = 50 kg
  • Height increment = 10 inches × 2.3 kg = 23 kg
  • Devine ideal weight = 50 + 23 = 73.0 kg (160.9 lbs)
  • Healthy clinical range (BMI 18.5–24.9) = 57.5 kg to 77.4 kg

Summary: Height = 5'10" | Devine Ideal = 73.0 kg | Recommended Healthy Range = 58 kg to 77 kg

Common Use Cases

  • Medical Target Formulation: Establish realistic target weight goals during clinical weight management therapy.
  • Pharmaceutical Dosing: Calculate ideal body weight for dosing medications that do not distribute into adipose tissue.
  • Fitness Goal Benchmarking: Set sensible long-term physical targets that avoid extreme, unhealthy leanness.

Frequently Asked Questions

Why do different formulas (Devine, Robinson, Hamwi) give different answers?

Each formula was derived from different historical clinical populations and clinical medication dosing studies, creating slight variations.

How do I determine my body frame size?

Measure your wrist circumference: for a male over 5'5", a wrist under 6.5" is small frame, 6.5"-7.5" is medium, and over 7.5" is large frame.

Can a person be healthy above their ideal weight?

Yes, an individual with high lean muscle mass and low visceral fat can exceed their ideal weight while remaining in peak cardiovascular health.

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