Multiple Medical Formulas (Based on Height & Gender):
  • Devine Formula (1974): Most widely used in medical settings
  • Robinson Formula (1983): Updated version of Devine
  • Miller Formula (1983): Alternative modern approach
  • Hamwi Formula (1964): Classic clinical formula
  • BMI Range: Healthy weight based on BMI 18.5–24.9
Note: These formulas calculate ideal weight based on skeletal frame (height & gender only). Age is used to provide personalized guidance and recommendations.
Used for personalized recommendations (not in weight formulas)
Different formulas for each gender
Your height in centimeters
Try Examples:
Average Ideal Weight57.7 kg127.1 lbsBased on height and gender (see age-specific guidance below)
Formula Results
Devine Formula (1974):56.9 kg (125.5 lbs)
Robinson Formula (1983):57.4 kg (126.6 lbs)
Miller Formula (1983):59.8 kg (131.9 lbs)
Hamwi Formula (1964):56.4 kg (124.4 lbs)
Healthy Weight Range (BMI 18.5–24.9)
50.4 - 67.8 kg111.0 - 149.5 lbsThe BMI-based range (18.5-24.9) represents weights associated with the lowest health risks for most people. However, BMI doesn't account for muscle mass, bone density, or body composition.
Personalized Interpretation
For younger adults, aim for the lower to middle range of the healthy weight spectrum. Building muscle mass through strength training can help achieve a healthy body composition.
Important Considerations:
  • These formulas estimate ideal weight based on height and gender only
  • They don't account for muscle mass, bone density, or body frame
  • Athletic individuals with more muscle may weigh more than the calculated ideal
  • Use these numbers as general guidelines, not absolute targets
  • Consult a healthcare provider for personalized weight recommendations
Privacy First - 100% Browser-Based:
  • All operations happen locally in your browser
  • Your data is never sent to any server
  • No data is stored, tracked, or shared
  • Completely anonymous and secure
Medical Disclaimer:

This calculator is for educational and informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.

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Frequently Asked Questions

What is the ideal body weight for a female?

According to the classic Devine formula, the ideal body weight for a female is 45.5 kg plus 2.3 kg for each inch of height over 5 feet. Other formulas like Robinson or Miller use slightly modified multipliers.

What is the Robinson Formula (1983) for ideal weight?

The Robinson formula is an updated version of the Devine formula designed to fit empirical data better. For males: 52 kg + 1.9 kg per inch over 5 feet. For females: 49 kg + 1.7 kg per inch over 5 feet.

Why do different formulas give different ideal weight results?

Different formulas were developed by different medical researchers using different demographic datasets and clinical observations to model healthy weight baselines. They represent minor statistical variations.

Does ideal weight depend on age?

Classic clinical formulas (Devine, Robinson, Miller, Hamwi) only use height and biological sex because skeletal frames do not change with age. However, healthy BMI ranges and target weights for older adults are often adjusted upwards to maintain bone density reserves.

What is the difference between ideal body weight and a healthy BMI range?

Ideal body weight formulas calculate a single target weight based on skeletal proportions. A healthy BMI range (18.5 to 24.9) represents a broad spectrum of weights associated with optimal physical health.

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