Waist-to-Height Ratio Calculator

WHtR = waist circumference (cm) ÷ height (cm). The result is a dimensionless ratio, typically between 0.3 and 0.7 for adults. Both measurements must use the same unit — centimeters in this calculator — since the ratio is purely proportional and cancels out the unit. The calculator classifies the ratio into one of four health bands based on published meta-analyses and public health guidelines: • < 0.40 — Extremely slim, potential underweight risk • 0.40–0.49 — Healthy range, low cardiometabolic risk • 0.50–0.59 — Overweight range, increased risk • ≥ 0.60 — Very high risk, strong association with metabolic disease These thresholds align with the widely cited public health guideline to keep waist circumference below half your height. For example, a person 175 cm tall should aim for a waist of less than 87.5 cm to stay in the healthy range.