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Ideal Weight Calculator

Calculate ideal weight using 4 medical formulas: Hamwi (1964), Devine (1974), Robinson (1983), Miller (1983). Plus healthy BMI range (18.5-24.9) for the same height. These are clinical formulas, not aesthetic targets.

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Average ideal weight (4 formulas)
72.5 kg
Formula breakdown
Hamwi (1964)75.2 kg
Devine (1974)73.2 kg
Robinson (1983)71.1 kg
Miller (1983)70.4 kg
Healthy BMI range (18.5-24.9)
58.6 kg78.9 kg
at 178 cm height
About these formulas: developed for medication dosing (not aesthetic ideal). They give rough targets — actual healthy weight depends on body frame, muscle mass, age, lifestyle. The BMI range below is a more modern guideline. Not medical advice.
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Inside the tool

What powers the Ideal Weight Calculator

4 medical formulas (Hamwi, Devine, Robinson, Miller)

Male / female variants

Average across formulas

Healthy BMI range (18.5-24.9) for the same height

Metric / imperial units

Built differently

Why the Ideal Weight Calculator is different

Browser-native

The Ideal Weight Calculator runs entirely in your browser. Input is processed locally — never uploaded, never logged, never cached anywhere outside your device.

No artificial limits

No daily quotas, no character ceilings, no "upgrade for more" walls. Every feature is the complete feature — the same on the first use as the thousandth.

Production-grade quality

Built to the same engineering bar as paid SaaS tools — accurate algorithms, audited logic, responsive design and accessibility-tested interactions.

Use Contexts

Common use contexts

  • Medication dosing reference
  • Weight goal-setting (general guidance)
  • Curiosity / health awareness
  • Comparing your weight vs clinical reference
Privacy by design

Private and secure

Zero upload

All processing happens in your browser. Input is never transmitted, logged or cached.

Works offline

Once the page loads, the tool runs without an internet connection. No network calls happen during use.

No tracking

No accounts, no cookies for tool state. Only aggregate analytics count visits at the page level.

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FAQ

Ideal Weight Calculator questions

All four were developed for medical dosing (drug clearance is more predictable based on lean mass than total weight). They're estimates — actual healthy weight depends on body frame, muscle mass, age. Use BMI range as a modern complement.