Waist-to-Height Ratio Calculator

Enter your height and waist circumference to calculate your WHtR instantly. A ratio below 0.5 is the healthy target — validated across 300,000+ people in peer-reviewed research.

cm
170 cm
cm
Measure at the midpoint between your lowest rib and hip bone
0.482 Your WHtR
Healthy
85 Healthy waist ceiling (cm)
0.30 0.40 0.50 0.60 0.80+

What is waist-to-height ratio?

Waist-to-height ratio (WHtR) is your waist circumference divided by your height, both in the same unit. The result is a single number — typically between 0.3 and 0.8 — that estimates how much central fat you carry relative to your frame.

The critical threshold is 0.5: keep your waist to less than half your height. This boundary was established by Ashwell in a 2014 actuarial validation study[1] and has been confirmed in a systematic review by Browning, Hsieh and Ashwell covering around 300,000 subjects across 31 studies.[2] The review found that WHtR outperformed BMI for cardiometabolic risk prediction, with an area under the ROC curve of 0.704 versus 0.671 for BMI.

WHtR works for both men and women with the same thresholds. Unlike BMI, it captures visceral fat distribution — the fat around your organs that drives insulin resistance, cardiovascular disease, and metabolic syndrome.

WHtR risk zones

WHtR rangeZoneWhat it means
< 0.40 Very Low Extremely lean. Typical of competitive athletes. Very low body fat carries its own health risks
0.40 – 0.49 Healthy Low cardiometabolic risk. This is the target range for most adults
0.50 – 0.59 Elevated Increased risk for insulin resistance, cardiovascular disease, and metabolic syndrome
≥ 0.60 High Risk Strongly associated with metabolic syndrome and type 2 diabetes. Medical check-up recommended

Why WHtR matters more than BMI

BMI divides your weight by your height squared. It tells you whether you are heavy for your height — but it cannot distinguish between visceral fat, subcutaneous fat, and muscle mass. A muscular person and an apple-shaped person with the same BMI face very different metabolic risks.

WHtR focuses specifically on central adiposity — the waist measurement that tracks visceral fat. Visceral fat wraps around the liver, pancreas, and intestines, and is the fat type most strongly linked to insulin resistance, elevated triglycerides, and cardiovascular events. By comparing waist to height rather than weight to height, WHtR captures the risk that BMI misses entirely.

Frequently asked questions

What is a good waist-to-height ratio?
A WHtR between 0.40 and 0.49 is considered healthy for both men and women. Below 0.40 means very low central fat — typically seen in lean athletes. Above 0.50 signals elevated cardiometabolic risk, and above 0.60 is associated with high risk for metabolic syndrome and type 2 diabetes.
How do I measure my waist correctly?
Measure at the midpoint between your lowest rib and the top of your hip bone (iliac crest). Stand upright, breathe out normally, and wrap the tape snugly — but not compressing the skin. Measure in the morning before eating for the most consistent reading.
Is WHtR better than BMI?
For predicting cardiometabolic risk, yes. A 2010 systematic review of 300,000+ subjects found WHtR outperformed BMI (AUC 0.704 vs 0.671). BMI cannot distinguish between visceral fat and muscle mass, while WHtR directly captures central adiposity — the fat most strongly linked to insulin resistance.
What if my WHtR is above 0.5?
A WHtR above 0.5 means your waist circumference exceeds half your height, placing you in an elevated risk zone. It does not mean you are ill — it means the risk is higher and worth addressing. Consider requesting baseline blood work (fasting glucose, HbA1c, triglycerides, HDL) from your doctor, and focus on reducing waist circumference through sustained calorie deficit and regular physical activity.

Related

What is a healthy waist-to-height ratio? → Waist-to-height ratio chart → WHtR vs BMI → Body Roundness Index calculator →

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