Waist-to-Height Ratio Calculator
Your waist-to-height ratio (WHtR) is one of the simplest and most effective ways to gauge health risk from abdominal fat. Enter your waist and height to see your ratio and risk band.
Waist-to-Height Ratio Calculator
Your waist-to-height ratio (WHtR) is one of the simplest and most effective ways to gauge health risk from abdominal fat. Enter your waist and height to see your ratio and risk band.
Measure at the narrowest point, after breathing out.
- Slim
- Healthy
- Increased risk
- High risk
A simple rule: keep your waist to less than half your height (ratio under 0.5).
This is an educational estimate, not medical advice. Consult a qualified professional.
Save & share your result
How waist-to-height ratio works
The calculation could not be simpler: waist circumference ÷ height, using the same unit for both. A ratio of 0.5 means your waist is exactly half your height. The widely promoted public-health message is: "keep your waist to less than half your height."
Because it scales waist size to your stature, WHtR works across different heights, ages and ethnic groups better than a raw waist measurement, and several studies have found it predicts cardiometabolic risk at least as well as BMI — sometimes better.
Reading your ratio
The gauge above places your ratio into broad bands:
- Below 0.4 — low, and occasionally a sign of being underweight.
- 0.4 to 0.5 — healthy; this is the target zone for most adults.
- 0.5 to 0.6 — increased risk, indicating excess central fat.
- Above 0.6 — high risk, strongly linked to heart and metabolic disease.
Why central fat matters
Fat stored around the abdomen (visceral fat) is more metabolically harmful than fat on the hips and thighs. It is associated with higher risk of type 2 diabetes, high blood pressure and cardiovascular disease — even in people whose BMI looks normal, sometimes described as "normal weight obesity." That is why a waist-based measure adds information that BMI alone misses.
Measure your waist at the midpoint between the bottom of your ribs and the top of your hip bones, directly against the skin, after breathing out normally. If your ratio is above 0.5, reducing waist size through diet quality, regular activity and better sleep can lower your risk substantially.
Frequently asked questions
What is a healthy waist-to-height ratio?
A ratio below 0.5 is considered healthy for most adults — in other words, your waist should be less than half your height. Ratios above 0.5 indicate increasing central-fat risk.
Is waist-to-height ratio better than BMI?
It is a useful complement. Because it captures abdominal fat, WHtR can flag risk in people with a normal BMI. Many researchers recommend using both together.
How do I measure my waist correctly?
Measure midway between your lowest rib and the top of your hip bone, against bare skin, keeping the tape level and snug but not compressing. Breathe out normally and read the measurement.
Sources & references
Not medical advice. This result is an educational estimate from HealthyLifeStyles (Trusted Wellness), based on population formulas — not a diagnosis or treatment. Always consult a qualified healthcare professional about your health.
https://www.healthylifestyles.com/tools/waist-to-height-ratio-calculator