RubanTools

Waist-to-Hip Ratio Calculator

Calculate your WHR - a better indicator of cardiovascular risk than BMI alone, especially for South Asians with abdominal obesity.

Enter Measurements
At narrowest point / navel level
At widest point of buttocks

WHR Risk Categories

Men
WHRRisk Level
< 0.85Low risk
0.85 – 0.89Moderate risk
0.90 – 0.99High risk
≥ 1.00Very high risk
Women
WHRRisk Level
< 0.75Low risk
0.75 – 0.79Moderate risk
0.80 – 0.85High risk
> 0.85Very high risk

Waist-to-Hip Ratio Cardiovascular Health Indicator

The Waist-to-Hip Ratio (WHR) is a simple measurement used by the World Health Organization (WHO) to assess abdominal obesity and cardiovascular risk. Calculated by dividing waist circumference by hip circumference, WHR is considered a more reliable predictor of heart disease risk than Body Mass Index (BMI) alone. WHO thresholds define high risk as WHR above 0.90 for men and 0.85 for women, regardless of overall body weight.

Why WHR Matters for Indians

Research published in the Indian Heart Journal and studies from the All India Institute of Medical Sciences (AIIMS) consistently show that South Asians, including Indians, tend to accumulate abdominal fat at lower BMI values than Western populations. This "thin-fat Indian" phenomenon means Indians face higher metabolic risk at seemingly normal body weights. The Indian Council of Medical Research (ICMR) recommends WHR screening as part of routine health check-ups for adults over 30. Urban Indians in cities like Chennai, Mumbai, and Delhi show particularly high prevalence of central obesity due to sedentary lifestyles and dietary patterns.

How to Measure Accurately

Waist circumference is measured at the narrowest point between the lower rib and the hip bone, while hip circumference is measured at the widest point of the hips. Measurements should be taken in the morning before eating, using a flexible non-elastic tape. This calculator accepts both centimetre and inch inputs and instantly classifies your risk level using WHO standards.

Frequently Asked Questions

WHR = Waist circumference ÷ Hip circumference. WHO risk categories: Men - Low risk: WHR < 0.90; Moderate: 0.90–0.99; High risk: ≥ 1.0. Women - Low risk: WHR < 0.80; Moderate: 0.80–0.85; High risk: ≥ 0.85. WHR above the high-risk threshold indicates central/abdominal obesity - excess visceral fat around organs - which is a stronger cardiovascular risk predictor than BMI alone, especially in South Asian populations.

Waist: measure at the narrowest point between ribcage and navel (typically 2–3 cm above the navel); breathe normally - do not suck in; use a non-elastic tape measure kept parallel to the floor. Hip: measure at the widest point around the buttocks and hip bones. Take measurements in the morning before eating. Take 2–3 readings and average for accuracy.

Research shows WHR and Waist-Height Ratio (WHtR) are stronger predictors of cardiovascular disease, type 2 diabetes, and metabolic syndrome than BMI - particularly in South Asians. A 'normal BMI' person with high WHR (apple-shaped, visceral fat) has higher cardiovascular risk than an 'overweight BMI' person with low WHR (pear-shaped, peripheral fat). WHO recommends using both BMI and WHR for complete risk assessment.

Indians and South Asians are genetically predisposed to central obesity at lower BMI levels. ICMR abdominal obesity cutoffs for Indians: Waist - Men: ≥ 90 cm; Women: ≥ 80 cm (stricter than WHO's 102/88 cm). South Asian research suggests high risk begins at WHR ≥ 0.88 (men) and ≥ 0.83 (women) - slightly stricter than WHO's 0.90/0.85 cutoffs.