Waist to Hip Ratio Calculator
Assess central adiposity and cardiovascular risk with the clinical Waist-to-Hip Ratio (WHR) standard. The World Health Organization (WHO) considers WHR an essential diagnostic indicator of intra-abdominal visceral fat, metabolic syndrome risk, and arterial health.
Risk classification cut-offs differ between biological sexes
Measured horizontally at the midpoint between the lower margin of the last palpable rib and the top of the iliac crest
Measured horizontally around the widest portion of the buttocks
Calculated as waist circumference divided by hip circumference
How to Use This Calculator
- Stand upright with feet together and relax your abdomen without sucking in your stomach.
- Place a flexible, non-stretch tape measure around your natural waistline, typically just above the umbilicus.
- Measure the widest circumference of your hips and buttocks, keeping the tape horizontal.
- Enter both measurements above to determine your WHR ratio and health classification.
Formula & Calculation Methodology
The World Health Organization states that a WHR ≥ 0.90 for men or ≥ 0.85 for women signifies substantially elevated risks of hypertension, type 2 diabetes mellitus, and coronary heart disease.
Worked Example
A male with an 82 cm waist and 98 cm hips
Frequently Asked Questions
Why is Waist-to-Hip Ratio considered more predictive of heart disease than BMI alone?↓
BMI measures total body mass regardless of where fat is stored. Visceral fat surrounding abdominal organs (liver, pancreas) actively secretes pro-inflammatory cytokines and free fatty acids into portal circulation, whereas subcutaneous gluteal fat is metabolically protective.
What are the official WHO cut-off values for high metabolic risk?↓
According to WHO expert consultations, a WHR of 0.90 or greater in men and 0.85 or greater in women indicates central obesity and elevated risk of cardiovascular complications and metabolic syndrome.
What is the physiological difference between apple and pear body shapes?↓
An "apple" (android) shape indicates predominant fat accumulation in the abdominal cavity and visceral spaces. A "pear" (gynoid) shape indicates fat deposition primarily in the subcutaneous gluteal-femoral region, which presents significantly lower cardiovascular morbidity.
Can targeted core exercises reduce waist circumference specifically?↓
Spot reduction of body fat is a physiological myth. Abdominal crunches strengthen underlying rectus abdominis muscle tissue but do not directly metabolize overlying visceral or subcutaneous fat. A caloric deficit combined with cardiovascular conditioning reduces systemic fat stores.
What limitation should I be aware of when interpreting WHR?↓
WHR may produce misleadingly favorable numbers in individuals who simultaneously lose abdominal fat and gluteal muscle mass. Measuring absolute waist circumference alongside WHR provides a more complete clinical picture.
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Open calculator →Source Citation & Disclaimer
Informational tool only; not licensed tax, legal, or financial advice.