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Health

Ideal Weight Calculator

Four peer-reviewed formulas give you a range — not a single number you're supposed to hit.

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cm

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kg

Used to show how far you are from ideal

Four peer-reviewed formulas — Devine, Hamwi, Robinson, Miller — give a range. No single formula fits everyone; use the average as a reference, not a target.
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Enter your height to calculate ideal weight

أمثلة عملية

Male, 180 cm

Devine: 74.9 kg · Hamwi: 75.3 kg · Robinson: 70.3 kg · Miller: 70.9 kg. Average: 72.9 kg. BMI-based (21.7): 70.2 kg. The four formulas agree within a 5 kg range — use 70–75 kg as the target zone.

Female, 165 cm

Devine: 56.9 kg · Hamwi: 56.3 kg · Robinson: 57.4 kg · Miller: 57.8 kg. Average: 57.1 kg. Tight agreement here — the 54–60 kg range is the healthy target for this height.

Male, 190 cm (tall)

Formula average: ~86 kg. A tall person with significant muscle mass might healthily weigh 92–95 kg. These formulas underestimate ideal weight for highly muscular individuals — use body fat % as the primary metric instead.

الأسئلة الشائعة

Which ideal weight formula is most accurate?▾
No single formula is best for all people. The Devine formula (1974) is widely used in clinical settings (especially for drug dosing). The average of all four formulas gives a more balanced estimate. Use the range, not a single number, as your reference.
Does ideal weight depend on muscle mass or frame size?▾
These formulas only use height and sex — they do not account for frame size (small, medium, large) or muscle mass. An athlete may healthily weigh 10–15% above the formula estimate because of higher lean mass.
What is the Devine formula?▾
Developed by B.J. Devine in 1974 for drug dosage calculations. Male: 50 kg + 2.3 kg per inch over 5 feet. Female: 45.5 kg + 2.3 kg per inch over 5 feet. It was never intended as a health target but became widely cited.
How is ideal weight different from BMI?▾
BMI gives you a number to classify weight relative to height. Ideal weight formulas give you a target weight. A BMI of 18.5–24.9 is considered healthy; the ideal weight range corresponds approximately to a BMI of 20–25.
Should I aim for the exact ideal weight number?▾
No. These are reference ranges, not prescriptions. A healthy weight for you depends on body composition, age, ethnicity, and fitness level. The range shown (±5%) is a more useful target than a single number.
Why do the four formulas give different results?▾
Each formula was derived from different study populations in different decades. Devine (1974) was based on drug pharmacokinetics. Hamwi (1964) was from diabetes management literature. Robinson and Miller (both 1983) were derived from actuarial data. The spread between them reflects real uncertainty in the "ideal" concept.

أدوات ذات صلة

BMI Calculator

Body Fat % Calculator

TDEE Calculator

Compound Interest

Ideal weight formulas are reference tools, not medical targets. Consult a healthcare professional before starting any weight management programme.