Ideal Weight Calculator

Calculate ideal body weight using Hamwi, Devine, Robinson, and Miller formulas plus a healthy BMI range. Supports metric/imperial, frame size, and current-weight comparison.

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Ideal Weight Calculator

Calculate ideal body weight using the Hamwi, Devine, Robinson, and Miller formulas, plus a healthy BMI range. Supports metric and imperial units, frame-size adjustment, and current-weight comparison.

Your Details

Best Estimate (average of 4 formulas)
72.5 kg / 159.8 lbs

Individual Formulas

Formulakglbs
Hamwi (1964)
48 + 2.7 × (inches − 60)
75.2165.8
Devine (1974)
50 + 2.3 × (inches − 60)
73.2161.3
Robinson (1983)
52 + 1.9 × (inches − 60)
71.1156.9
Miller (1983)
56.2 + 1.41 × (inches − 60)
70.4155.2

Healthy BMI Range

BMI 18.5 (low)58.6 kg / 129.2 lbs
BMI 24.9 (high)78.9 kg / 173.9 lbs
Ideal weight formulas are based on statistical averages from historical populations and do not account for body composition, muscle mass, or ethnicity. Use them as one data point alongside body fat percentage, BMI, and your own health goals. Consult a healthcare provider for personalized advice.

Frequently Asked Questions

What is the Ideal Weight Calculator?

The Ideal Weight Calculator is a free online tool that calculate ideal body weight using hamwi, devine, robinson, and miller formulas plus a healthy bmi range. supports metric/imperial, frame size, and current-weight comparison.. It runs entirely in your browser with no installation or sign-up needed.

Which formula is most accurate?

There is no single best formula — all four (Hamwi, Devine, Robinson, Miller) give slightly different results based on historical population data. The average of all four plus a healthy BMI range is a more robust target than any one.

How does frame size adjust the result?

Small frame uses -10% of the formula result; large frame uses +10%. Frame is assessed via wrist circumference or elbow breadth — taller/heavier-boned people need proportionally more mass.

Do these formulas account for muscle mass?

No. They are based on height, sex, and statistical averages only. Athletes with high muscle mass will usually exceed "ideal" weight while still being very healthy. Use body fat percentage for a more accurate picture.

Is the Ideal Weight Calculator free to use?

Yes, the Ideal Weight Calculator is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.

Is my data safe with this tool?

Absolutely. The Ideal Weight Calculator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Does the Ideal Weight Calculator work on mobile devices?

Yes, the Ideal Weight Calculator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

How do I use the Ideal Weight Calculator?

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

Which browsers are supported?

The Ideal Weight Calculator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

About Ideal Weight Calculator

Ideal Weight Calculator is a free, browser-based tool in our Calculator Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.

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