Waist to Height Ratio Calculator
Evaluate cardiometabolic health and visceral fat distribution using the evidence-based Waist-to-Height Ratio (WtHR).
About Waist-to-Height Ratio (WtHR)
Waist-to-Height Ratio is a validated biometric indicator for assessing central obesity, visceral adipose accumulation, and associated cardiovascular morbidity risk.
The Universal Guideline
Keep your waist circumference to less than half your height (WtHR < 0.50).
Classification Categories
- WtHR < 0.40: Underweight / Extremely Lean
- WtHR 0.40 to 0.49: Healthy Weight / Low Risk
- WtHR 0.50 to 0.59: Increased Cardiometabolic Risk
- WtHR ≥ 0.60: Substantially Elevated Cardiovascular Risk
Frequently Asked Questions
Why is WtHR often preferred over standard BMI?
BMI cannot distinguish between lean skeletal muscle and intra-abdominal fat. WtHR specifically flags deep visceral adiposity surrounding internal organs.
Where should the waist measurement be taken?
Measure midway between the lowest palpable rib margin and the top of the iliac crest (usually right at the navel level) during relaxed exhalation.
Does WtHR apply equally across different ethnicities?
Yes. Clinical trials confirm that the boundary threshold of 0.50 applies across diverse ethnic groups, sexes, and age demographics.
Can children use the 0.50 boundary rule?
Yes. The "waist under half your height" principle applies to children over age 5 as well as adults.
Calculate in three steps
- 1Enter your valuesUse the fields above and check the units shown beside each input.
- 2Run the calculationSelect Calculate to refresh the result with your latest values.
- 3Review or shareCompare the result, reset the form, print it, or share this page.