Waist-to-Hip Ratio Calculator

Waist-to-Hip Ratio Guide

WHR and Health Risk

For men: WHR below 0.90 is low risk, 0.90–0.99 is moderate risk, 1.00 or above is high risk. For women: WHR below 0.80 is low risk, 0.80–0.89 is moderate risk, 0.90 or above is high risk. These thresholds are from the World Health Organisation and reflect the association between abdominal fat distribution and cardiovascular disease, type 2 diabetes, and metabolic syndrome risk.

WHR vs BMI

BMI measures total body mass relative to height but cannot distinguish between fat and muscle, or between subcutaneous fat (under the skin) and visceral fat (around the organs). Visceral fat is far more metabolically active and harmful than subcutaneous fat. A person with a normal BMI but high WHR (sometimes called 'skinny fat') can have significantly elevated cardiovascular risk. Conversely, a muscular person with high BMI may have low WHR and low actual risk.

Waist-to-Height Ratio

A simpler metric gaining clinical favour is the waist-to-height ratio (WHtR). The key finding: your waist circumference should be less than half your height. WHtR below 0.5 is healthy for most adults; 0.5–0.6 is elevated risk; above 0.6 is high risk. A 2010 systematic review found WHtR was a better predictor of cardiovascular risk than BMI across multiple ethnicities and ages — partly because it automatically adjusts the threshold based on height.

Reducing Waist Circumference

Visceral fat (the dangerous kind that drives up waist measurement) responds well to aerobic exercise — more so than subcutaneous fat. High-intensity interval training (HIIT) and moderate continuous cardio both reduce visceral fat effectively. Dietary approaches with strong evidence: caloric deficit, reduced refined carbohydrates and sugar, and adequate sleep (sleep deprivation drives cortisol-mediated visceral fat accumulation). Strength training preserves muscle during weight loss, preventing t