Waist-to-hip ratio calculator
Enter your waist and hip measurements to see the ratio to two decimals and where it sits against the cut-off the World Health Organization lists for your sex. A measurement ratio, not a diagnosis, and it runs entirely in your browser.
Medically reviewed by Kevin Brandstetter, M.D.Updated September 28, 2026
At the midpoint between the lower margin of the last rib you can feel and the top of the hip bone (the iliac crest), at the end of a normal breath out.
At the largest circumference of the buttocks, with the tape level with the floor.
Your waist-to-hip ratio
Enter your sex, waist, and hip
The ratio appears here once all three are filled in.
A calculation, not a diagnosis.
The waist-to-hip ratio compares two tape measurements. It describes where the body carries weight and says nothing on its own about health, fitness, or any condition. A small change in where the tape sits changes the answer. This tool is for adults. A licensed clinician reads the ratio alongside your history, not instead of it.
Methodology
- How this is calculated
- The ratio is the waist circumference divided by the hip circumference, both in the same unit, so it does not matter whether you measure in inches or centimeters. It is shown to two decimals, and the comparison with the cut-off reads that displayed number, so the panel never prints 0.90 beside a sentence that says it is below 0.90. The cut-offs are 0.90 for men and 0.85 for women, and a ratio equal to the cut-off counts as at or above it.
- Where the data comes from
- World Health Organization, Waist Circumference and Waist–Hip Ratio: Report of a WHO Expert Consultation (Geneva, December 2008; published 2011). The measurement protocol is section 5.2: the waist at the midpoint between the lower margin of the last palpable rib and the top of the iliac crest, the hip at the largest circumference of the buttocks. The 2008 consultation itself set no new cut-offs (sections 5.3 and 5.4). The cut-offs come from its Annex A, Table A1, which lists the recommendations “often attributed to WHO” and traces the ratio cut-offs to WHO's 1999 diabetes report. That report says “above 0.90” for men and “above 0.85” for women, while Table A1 prints ≥0.90 and ≥0.85 with the risk of metabolic complications “Substantially increased”. This page follows Table A1. Table A1 gives no label below the cut-off, so neither does this page.
- Last updated
- September 28, 2026
- What this does not account for
- Body size, muscle, age, ethnicity, pregnancy, and every other fact a clinician weighs. The WHO report notes that risk at a given ratio differs between populations, and other bodies publish different or ethnicity-specific cut-offs; this tool applies only Table A1's, because choosing another is a clinical judgment a calculator cannot make. It does not apply the waist circumference cut-offs in the same table.
How to measure
Stand with your feet close together and your arms at your sides, wearing little clothing. Keep a tape that does not stretch level with the floor and snug without pressing in. Measure your waist at the end of a normal breath out, halfway between your lowest rib and the top of your hip bone. Measure your hips around the widest part of the buttocks.
What the ratio adds
Two people with the same weight can carry it in different places. The ratio is one way to describe that difference, which is why clinicians sometimes read it alongside a BMI rather than instead of one. It is a single measurement at a single moment, and the same person can measure a little differently from one day to the next.
Nothing here is stored
Your answers stay in your browser. They are not sent to Temi, not saved, not attached to you, and not recorded in any session replay, and closing the tab clears them. Temi knows only that someone opened this tool, the same thing it knows about every page.
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