Ultimate BMI

BMI + Body Composition Dashboard

Your inputs

Units

Age

Used for age-adjusted context (illustrative).

Sex (optional)

Improves body-fat estimates (US Navy method).

Ethnicity / ancestry

We show standard WHO BMI categories plus selected population thresholds where applicable.

Height

Weight

Neck

Optional, but recommended for body-fat estimate.

Waist

Hip

Needed for WHR and female body-fat estimate.

Name

Educational only. Not medical advice. If you have health concerns, consult a qualified clinician.

Your results dashboard

BMI

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WHR

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WHtR

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Body fat (est.)

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BMI spectrum

UnderHealthyOverObese

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Estimated demographic comparison

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This percentile is an illustrative estimate (not a medical percentile) unless you provide a reference dataset.

All metrics, side-by-side

Why these metrics matter

BMI is a weight-for-height screening tool. It doesn’t measure fat directly.
Waist measures help flag central fat, which is more strongly linked to cardiometabolic risk.
WHtR (waist-to-height) is a quick rule-of-thumb: lower is generally better.
WHR (waist-to-hip) helps identify “apple” vs “pear” patterns.

Population thresholds (transparent)

Standard WHO

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Selected population

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