Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and see your WHO health risk category instantly.
| Risk level | Male threshold | Your WHR |
|---|---|---|
| Low Risk | < 0.90 | 0.82 ← you are here |
| Moderate Risk | 0.90 – 0.99 | — |
| High Risk | ≥ 1.00 | — |
How to use this calculator
Select your gender, then enter your waist and hip measurements using the sliders or number inputs. Your waist-to-hip ratio and WHO health risk category appear instantly. For accurate results, see measurement instructions in the section below.
Understanding your waist-to-hip ratio
The waist-to-hip ratio (WHR) is calculated by dividing your waist circumference by your hip circumference. The resulting number reflects how weight is distributed in your body. Central obesity — excess weight around the waist — is associated with greater cardiovascular and metabolic health risks than weight distributed around the hips and thighs. The WHO defines risk thresholds separately for men and women because body fat distribution differs between sexes.
Frequently asked questions
WHO waist-to-hip ratio health risk thresholds
The World Health Organization defines health risk categories based on WHR as follows. These thresholds are validated against cardiovascular disease and metabolic syndrome outcomes in large population studies.
| Sex | Low Risk | Moderate Risk | High Risk |
|---|---|---|---|
| Male | < 0.90 | 0.90 – 0.99 | ≥ 1.00 |
| Female | < 0.80 | 0.80 – 0.84 | ≥ 0.85 |
Why waist-to-hip ratio matters more than BMI
BMI only measures total mass relative to height — it does not tell you where fat is stored. WHR measures fat distribution, which is a stronger predictor of metabolic and cardiovascular risk.
- ·Visceral fat (belly fat) is metabolically active and releases inflammatory cytokines that increase heart disease and diabetes risk — WHR captures this, BMI does not
- ·A person can have a normal BMI with high WHR ("normal weight obesity") and carry significant metabolic risk that would go undetected by BMI alone
- ·Studies show WHR predicts cardiovascular events more accurately than BMI, particularly in women
- ·WHR is useful across different body types and ethnicities where BMI cutoffs may not apply accurately
- ·Improvements in WHR (even without weight loss) indicate favorable shifts in fat distribution that reduce risk
How to measure waist and hip accurately
Consistent measurement technique is critical for accurate results. Small changes in tape placement can significantly affect the calculated ratio.
- ·Use a flexible, non-stretchable tape measure
- ·Measure in the morning before eating or drinking, after using the bathroom
- ·Stand upright with feet together and abdominal muscles relaxed
- ·Waist: measure at the narrowest point between the bottom of the ribcage and the top of the hip bones — roughly at the navel or slightly above
- ·Hip: measure at the widest point of the buttocks with feet together
- ·Take each measurement twice and average them; the tape should be snug but not compressing skin
How to reduce waist circumference
Reducing waist size improves WHR and directly reduces visceral fat — the most dangerous type. Spot reduction is not possible, but these strategies preferentially reduce abdominal fat.
- ·Create a moderate calorie deficit (250–500 kcal/day) — visceral fat responds faster to calorie restriction than subcutaneous fat
- ·Prioritize strength training 2–3× per week — muscle tissue increases metabolic rate and promotes fat loss in the abdominal region
- ·Include moderate-intensity cardio (150+ min/week per ACSM guidelines) — aerobic exercise is particularly effective at reducing visceral fat
- ·Reduce refined carbohydrates and added sugars — these drive insulin spikes that preferentially store fat around the abdomen
- ·Manage sleep and stress — elevated cortisol from poor sleep and chronic stress directly promotes visceral fat accumulation
- ·Limit alcohol, especially beer and spirits — alcohol calories are preferentially converted to abdominal fat