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Peak You · Free risk screen

The two numbers BMI can't see — start with the one you can measure in 60 seconds.

Your waist-to-height ratio is the simplest cardiometabolic risk screen — and a stronger signal than BMI. No bloodwork. No account. Your numbers never leave this page.

A 2-minute risk screen

It's a risk screen, not a diagnosis — a high ratio is a signal to confirm with a DEXA scan and a clinician, not a verdict.

measured at the navel
standing, no shoes
—

What your waist-to-height ratio actually tells you

Waist-to-height ratio (WHtR) is your waist circumference divided by your height. It's a simple proxy for central adiposity — fat carried around the middle, near your organs — which is a stronger cardiometabolic risk signal than weight or BMI alone, because BMI can't tell muscle from fat or see where fat sits.

The widely cited guideline is straightforward: keep your waist to less than half your height.

< 0.5within the guideline
0.5–0.6elevated signal
≥ 0.6higher signal

A ratio above the line isn't a diagnosis — it's a reason to look closer. The honest next step is a DEXA scan (which measures visceral fat and lean mass directly) read by a clinician, not a number off a tape measure.

Bands per the WHtR <0.5 indicator literature (Ashwell & Gibson, BMJ Open) and PMC9261284. ⚠ This screen and its thresholds are pending clinical and legal review before public release. It is a risk screen, not a diagnosis or medical advice.