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Health & Fitness

Ideal Weight Estimation Calculator

Compare ideal body weight estimates from the Devine, Robinson, Miller and Hamwi formulas with the healthy BMI weight range.

Your inputs

Results

Devine (1974)

70.5 kg

Robinson (1983)
68.9 kg
Miller (1983)
68.7 kg
Hamwi (1964)
72 kg
Healthy BMI range for your height
56.7–76.3 kg

≈Estimate based on the stated model and assumptions

Notes for this result

  • These formulas were designed mainly for medication dosing, not as personal targets. A healthy weight depends on body composition and health factors.

Inputs are never added to links for financial, salary or health calculators.

What this calculator does

Ideal body weight formulas were developed mainly for medication dosing. They give a reference figure, not a personal target.

Formula and method

Devine: men 50 kg + 2.3 kg per inch over 5 ft; women 45.5 kg + 2.3 kg per inch over 5 ft (others use different constants).

Worked example

Calculated by this tool with its default inputs:

Inputs

  • Units: Metric (kg, cm)
  • Sex (used by the formula): Male
  • Height: 175 cm

Results

  • Devine (1974): 70.5 kg
  • Robinson (1983): 68.9 kg
  • Miller (1983): 68.7 kg
  • Hamwi (1964): 72 kg
  • Healthy BMI range for your height: 56.7–76.3 kg

How to read the results

A healthy weight is a range; body composition and health markers matter more than any single formula.

Assumptions and limitations

  • Defined for heights of 5 ft (152.4 cm) and above.
  • An estimate for healthy adults, not a diagnosis or medical advice. Consult a qualified health professional about your personal situation.

Health results are general estimates for adults and do not replace medical advice, diagnosis or treatment. Speak to a qualified health professional about your personal situation, especially during pregnancy or if you have a medical condition.

Questions

Why do the formulas disagree?

They were derived from different data and purposes.

Methodology and verification

Result type
Estimate based on the stated model and assumptions
Formula version
1.0
Automated verification
2 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
Editorial review
Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.

Privacy

Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Because this calculator can involve personal financial or health details, your inputs are never added to share links or saved to history. Privacy policy