Body weight on a scale tells you very little about where that weight sits. Two people can share the exact same weight and body-mass index yet carry fat in completely different places — and the location of that fat matters far more for long-term health than the number itself. The waist-to-hip ratio (WHR) is a simple, low-cost screening measure that compares your waist circumference to your hip circumference and flags whether you carry a disproportionate amount of fat around your midsection.
This calculator computes your WHR instantly, applies the World Health Organization (WHO) abdominal-obesity cut-points for men and women, and — when you enter your height — also estimates your waist-to-height ratio, a second widely used central-obesity screen. No scale, no app, no appointment: just a tape measure and a few seconds.
How to Use
- Measure your waist. Stand relaxed, breathe out normally, and wrap a soft tape measure around your waist at the level of your belly button (navel). Keep the tape snug against the skin but do not squeeze or indent it. Enter the value in the Waist Circumference box.
- Measure your hips. Wrap the tape around the fullest part of your buttocks, keeping it parallel to the floor. Enter that number in Hip Circumference.
- Select your biological sex. WHO uses different WHR thresholds for men and women because fat distribution differs on average between the sexes. Choose male or female.
- Enter your height (optional). Adding your height lets the calculator also compute your waist-to-height ratio, which many researchers consider an even better early warning of central adiposity.
- Read the result card. The card shows your WHR, the WHO abdominal-obesity code (0 = below the male 0.90 / female 0.85 cut-point, 1 = at or above it), your waist-to-height ratio, and the waist-to-height risk code (0 = under 0.5 healthy, 1 = at or over 0.5 elevated).
For the most reliable reading, measure in front of a mirror, keep the tape horizontal, and take the measurement at the end of a normal exhale rather than after sucking in your stomach.
The Waist-to-Hip Ratio Formula
The calculation itself is deliberately simple:
WHR = Waist Circumference ÷ Hip Circumference
Both measurements must be in the same units (centimeters or inches — the ratio is unitless). A WHR of 0.80 means your waist is 80% as wide as your hips. The WHO defines abdominal obesity using these cut-points:
- Women: WHR greater than 0.85 indicates abdominal obesity.
- Men: WHR greater than 0.90 indicates abdominal obesity.
Why does this matter? Fat stored around the abdomen — especially the visceral fat packed around internal organs — is metabolically active and is associated with higher rates of insulin resistance, type 2 diabetes, high blood pressure, abnormal cholesterol, and cardiovascular disease. Fat stored on the hips and thighs is generally considered less metabolically risky. That is why two people with the same BMI can have very different disease risk profiles.
A second useful screen is the waist-to-height ratio (WHtR): waist circumference divided by height. The commonly cited rule is that a WHtR below 0.50 is healthy — in plain terms, your waist circumference should be less than half your height. Because it uses height rather than sex-specific cut-points, it works similarly for men and women and is especially handy for quick self-checks.
Examples
Example 1 — A woman near the threshold. Maria measures an 80 cm waist and 100 cm hips, and she is 170 cm tall. Her WHR = 80 ÷ 100 = 0.80. Because the female abdominal-obesity line is 0.85, 0.80 falls just under it — not classified as abdominal obesity. Her WHtR = 80 ÷ 170 ≈ 0.47, which is below 0.50, so the calculator marks her waist-to-height status as Healthy.
Example 2 — A man over the threshold. David measures a 95 cm waist and 100 cm hips, and he is 175 cm tall. His WHR = 95 ÷ 100 = 0.95, which is above the male cut-point of 0.90, so the calculator flags abdominal obesity. His WHtR = 95 ÷ 175 ≈ 0.54, above 0.50, reinforcing the at-risk reading. This pattern — apple-shaped rather than pear-shaped — is exactly the profile clinicians watch most closely.
Example 3 — The boundary case. A woman with an 85 cm waist and 100 cm hips lands at exactly WHR = 0.85. The WHO threshold is "greater than 0.85," so a value of exactly 0.85 is not classified as abdominal obesity — but it is the line, and losing even 2–3 cm off the waist moves her comfortably away from it.
FAQ
What is a healthy waist-to-hip ratio?
For women, a WHR at or below 0.85 is considered within range; for men, at or below 0.90. Values above those cut-points indicate abdominal (central) obesity. A second quick check is the waist-to-height ratio, which should stay below 0.50 for both sexes.
Is WHR better than BMI?
They measure different things. BMI compares weight to height but ignores where fat is stored. WHR specifically captures central adiposity, which is more closely tied to metabolic and cardiovascular risk. Many clinicians now use waist circumference and WHR alongside BMI rather than relying on BMI alone.
Why are the thresholds different for men and women?
On average, men tend to store fat abdominally ("apple shape") while women tend to store it on the hips and thighs ("pear shape"). Because of this baseline difference, WHO set sex-specific cut-points — 0.90 for men and 0.85 for women — so the thresholds reflect comparable levels of internal fat risk.
How do I measure my waist correctly?
Use a flexible, non-stretching tape. Stand up straight, relax, exhale normally, and measure at the level of your belly button, keeping the tape parallel to the floor and snug but not pressing into the skin. Measuring over clothing or sucking in your stomach will give you an artificially low number.
What if my WHR is high — should I be worried?
A high WHR is a warning sign, not a diagnosis. It suggests you may be carrying excess visceral fat, which is linked to diabetes, hypertension, and heart disease. The good news is that abdominal fat responds well to regular exercise, adequate sleep, and a balanced diet. Share the result with your doctor, who can interpret it alongside your blood work and family history.
Does this calculator work in inches?
The WHR itself is unitless — as long as your waist and hip are both in centimeters or both in inches, the ratio is identical. The optional height field is labeled in centimeters on the input; if you measured in inches, divide your height by 2.54 before entering it (e.g., 68 in ≈ 173 cm) so the waist-to-height ratio uses matching units.
Disclaimer
This waist-to-hip ratio calculator is provided for informational purposes only and is not medical advice, diagnosis, or a substitute for professional medical evaluation. WHR and waist-to-height ratios are population-level screening measures; they do not diagnose any condition and do not account for muscle mass, ethnicity, age, pregnancy, or individual health history. Always consult a qualified healthcare provider about your specific health concerns before making dietary, exercise, or treatment decisions.