Health

Waist-to-Height Ratio Calculator

Calculate your waist-to-height ratio (WHtR) instantly. Enter your waist and height in the same unit to see your ratio and health-risk category.

Waist-to-Height Ratio Calculator

Unit

Waist Circumference

Height

Method

How this calculator works

Waist-to-Height Ratio (WHtR) = Waist ÷ Height, using the same unit for both. A ratio below 0.5 is generally considered healthy.

Measure your waist circumference at the narrowest point of your torso, breathing out normally.
Measure your height using the same unit of measurement (centimeters or inches).
Divide your waist measurement by your height measurement.
Compare the resulting ratio against the standard health categories to interpret your result.

Examples

Worked examples

Real numbers, end-to-end results.

Waist 80 cm, Height 170 cm

WHtR = 0.47

Falls in the healthy range (below 0.5).

Waist 100 cm, Height 175 cm

WHtR = 0.57

Increased-to-high risk; central fat reduction recommended.

Use cases

When to use it

Screening for abdominal obesity and central-fat-related health risk
Tracking waistline changes during a weight-loss or fitness program
Comparing body-shape risk without relying on weight or BMI alone
Quick self-assessment using only a tape measure

Disclaimer: This calculator provides estimates for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for decisions affecting your health. Results depend on the accuracy of inputs provided.

FAQ

Frequently asked questions

What is a good waist-to-height ratio?

For most adults, a waist-to-height ratio (WHtR) below 0.5 is considered healthy. A common rule of thumb is to keep your waist circumference to less than half your height.

How do I measure my waist correctly?

Measure around the narrowest part of your torso, roughly midway between the bottom of your ribs and the top of your hip bones (near the belly button). Keep the tape snug but not compressing the skin, and measure after breathing out normally.

Is waist-to-height ratio better than BMI?

Many researchers consider WHtR a stronger indicator of central (abdominal) fat and related health risks than BMI, because BMI does not distinguish between fat and muscle or account for where fat is stored.

Does the unit matter for the calculation?

No. Because WHtR is a ratio of waist divided by height, both measurements must use the same unit, but the resulting number is the same whether you measure in centimeters or inches.

Can children use the waist-to-height ratio?

The 0.5 cutoff works reasonably well for children over five as a simple screening tool, but pediatric health should always be assessed by a healthcare provider using age-appropriate charts.