What is waist-to-height ratio (WHtR)?

WHtR is your waist circumference divided by your height, both in the same unit. A value of 0.5 means your waist is exactly half your height. Research consistently links a WHtR above 0.5 to elevated cardiovascular and metabolic disease risk, independent of BMI.

How do I measure my waist correctly?

Measure at the narrowest part of your torso, usually about halfway between the bottom of your ribs and the top of your hip bone. Breathe out normally and measure without pulling the tape tight. Take the measurement in the morning before eating for the most consistent results.

What is a healthy WHtR?

The widely accepted healthy boundary is below 0.5. Values between 0.5 and 0.59 indicate increased risk, and values of 0.6 or above indicate high risk. The mnemonic is: "keep your waist circumference to less than half your height."

How does WHtR compare to BMI?

WHtR captures central (abdominal) fat, which is more strongly linked to metabolic syndrome, type 2 diabetes, and cardiovascular disease than overall body fat measured by BMI. Athletes or muscular individuals can have a high BMI but a healthy WHtR, making WHtR a useful complementary metric.

Does WHtR differ by sex or age?

The 0.5 boundary applies to both men and women. Some research suggests slightly higher thresholds for older adults (over 50), but 0.5 remains the most widely used clinical cutoff. This calculator uses the standard age-independent boundary.

Can WHtR alone diagnose a health condition?

No. WHtR is a screening tool, not a diagnostic measure. A high WHtR suggests elevated risk and is a reason to consult a healthcare professional, but it must be interpreted alongside other clinical measurements and personal health history.

Waist to Height Ratio Calculator

Name: Waist to Height Ratio Calculator
Availability: InStock
Author: Nham Vu

Enter your waist circumference and height in metric or imperial units to instantly calculate your WHtR and cardiovascular health risk category.

Measurements

Unit System

Waist Circumference

Measure at the narrowest point of your torso.

Height

Enter your waist circumference and height to see results.

Results update instantly as you type.

Summary

Enter your waist circumference and height in metric or imperial units to instantly calculate your WHtR and cardiovascular health risk category.

How it works

Choose metric (cm) or imperial (ft/in) units.
Enter your waist circumference measured at the narrowest point.
Enter your height.
Your WHtR and health risk category appear instantly.
Review the color-coded risk scale to see where you fall.
Compare against the recommended "keep it under half your height" guideline.

Use cases

Assess cardiovascular and metabolic risk from abdominal fat.
Screen for central obesity using a single simple ratio.
Track waist measurement progress over a diet or exercise program.
Compare risk across different body types where BMI may be misleading.
Use as an additional screening tool alongside BMI for a fuller health picture.
Help set a waist circumference reduction goal based on your height.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu