Practical

Ideal Weight Calculator

Units:

Sex:

Height (cm)

What is Ideal Weight Calculator?

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An ideal weight calculator estimates a healthy target weight range using standard formulas (Hamwi, Devine, Robinson) based on height and sex. All formulas are approximations — individual body composition varies widely.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

Formula

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f(x)Devine (men): 50kg + 2.3kg per inch over 5'0"; Devine (women): 45.5kg + 2.3kg per inch over 5'0"; BMI 18.5-24.9

Variable Legend

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Symbol	Name	Unit	Description
H	Height	cm or feet/inches	—
W_ideal	Ideal weight	kg	—
BMI	Body Mass Index	kg/m²	—

How to Ideal Weight Calculator

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1Hamwi (men): 48kg + 2.7kg per inch over 5ft
2Hamwi (women): 45.5kg + 2.2kg per inch over 5ft
3Devine (men): 50kg + 2.3kg per inch over 5ft
4BMI 18.5–24.9 gives an alternative weight range

Worked Examples

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Example 1

Given:Male, 180cm (5'11") using Hamwi

Result:48 + 2.7×11 = 77.7 kg ideal weight

Real-World Applications

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Health assessment and nutrition planning

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Fitness goal setting

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Medical consultation baseline

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Caloric intake calculation

Ideal Weight Formula Comparison (male, 180cm)

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Formula	Ideal weight (kg)
Hamwi	77.7
Devine	77.3
Robinson	76.5
Miller	77.8
BMI range 18.5–24.9	59.9–80.6

Frequently Asked Questions

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Is ideal weight just one number?

No, it's a range (BMI 18.5-24.9). "Ideal" varies by age, sex, muscle mass, bone density.

Which formula is most accurate?

Devine is popular. But consider frame size, muscle mass, sport training. BMI is rough starting point.

Can muscular people have "overweight" BMI?

Yes. Muscle is denser than fat. Body fat % is better than BMI for athletes.

References

›Ideal weight formulas — StatPearls

For informational purposes only. This tool is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional.

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How to Calculate Ideal Body Weight: 5 Different Formulas Compared

6 min read

Formula-verified for precision

Reviewed October 2026

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Ideal Weight Calculator