Waist to Hip Ratio Calculator
Enter your waist and hip measurements to get your WHR score, WHO health risk level, body shape, and ideal waist target.
⚖️ What is the Waist to Hip Ratio?
Waist to hip ratio (WHR) is a simple measurement that compares the circumference of your waist to the circumference of your hips. The formula is straightforward: divide your waist measurement by your hip measurement. A woman with a 75 cm waist and 95 cm hips has a WHR of 0.79. A man with an 88 cm waist and 100 cm hips has a WHR of 0.88. The World Health Organization uses these ratios to classify cardiovascular and metabolic disease risk.
WHR is widely used in clinical settings, fitness assessments, and epidemiological research for three main reasons. First, it specifically captures central obesity, the accumulation of fat around the abdomen and internal organs, which is more metabolically harmful than fat stored in the hips and thighs. Second, it normalizes waist size against body frame, making it more meaningful than waist circumference alone. Third, large studies including the INTERHEART study published in The Lancet found WHR to be a stronger predictor of heart attack risk than BMI across diverse global populations.
A common misconception is that BMI tells the full story of health risk. Two people can have the same BMI but completely different WHRs and disease risk profiles. A muscular athlete and a sedentary person of equal height and weight will have the same BMI, but if the athlete carries muscle in the limbs and the sedentary person carries fat around the abdomen, their WHRs will differ significantly. WHR fills this gap by directly measuring where fat is located rather than just how much there is.
The Ideal Waist Finder tab in this calculator works in reverse: enter your hip circumference and sex, and it calculates the waist target you should aim for to achieve a low-risk WHR. This is useful for setting a concrete fitness goal rather than a vague weight target, since waist reduction is highly achievable through aerobic exercise and a sustained calorie deficit.
📐 Formula
WHR = Waist ÷ Hip
WHR = waist-to-hip ratio (dimensionless number)
Waist = circumference at the narrowest point of the torso, about 1 inch above the belly button (cm or inches)
Hip = circumference at the widest point of the hips and buttocks (same unit as waist)
WHO thresholds (female): Low risk < 0.80 | Moderate risk 0.80 to 0.85 | High risk > 0.85
WHO thresholds (male): Low risk < 0.90 | Moderate risk 0.90 to 0.99 | High risk ≥ 1.00
Example: Waist = 76 cm, Hip = 98 cm, WHR = 76 / 98 = 0.776 (Low Risk for females)
📖 How to Use This Calculator
Steps
1
Select your sex - Click Female or Male so the calculator applies the correct WHO thresholds. Female and male have different risk cutoffs due to natural differences in fat distribution patterns.
2
Enter your waist measurement - Measure your waist at the narrowest point (about one inch above your belly button while exhaling normally) and enter the value in centimeters.
3
Enter your hip measurement - Measure your hips at the widest point of your buttocks with your feet together, and enter the value in centimeters.
4
Read your WHR and risk level - The calculator shows your WHR ratio, WHO health risk category, body shape classification, and ideal waist range for your specific hip size.
💡 Example Calculations
Example 1 - Female, Low Risk (Hourglass Shape)
Waist: 76 cm, Hip: 98 cm, Female
1
WHR = Waist / Hip = 76 / 98 = 0.776. This is below the female low-risk threshold of 0.80.
2
Health risk classification: Low Risk (per WHO). Body shape: Hourglass (WHR between 0.75 and 0.80 for females).
3
Ideal waist range for 98 cm hips: 66.6 cm to 78.4 cm. Current waist of 76 cm falls within this healthy range.
WHR = 0.78 | Low Risk | Hourglass
Try this example →Example 2 - Male, Moderate Risk (Rectangular Shape)
Waist: 93 cm, Hip: 100 cm, Male
1
WHR = 93 / 100 = 0.93. This falls in the moderate risk zone for males (0.90 to 0.99).
2
Health risk classification: Moderate Risk (per WHO). Body shape: Rectangular (WHR between 0.85 and 0.95 for males).
3
Ideal waist range for 100 cm hips (male): 80 cm to 90 cm. To reach low risk, this person needs to reduce waist circumference by approximately 3 cm.
WHR = 0.93 | Moderate Risk | Rectangular
Try this example →Example 3 - Female, High Risk (Apple Shape)
Waist: 92 cm, Hip: 100 cm, Female
1
WHR = 92 / 100 = 0.92. This exceeds the female high-risk threshold of 0.85.
2
Health risk classification: High Risk (per WHO). Body shape: Apple (Android). Central obesity is present, with fat concentrated around the abdomen rather than the hips and thighs.
3
Ideal waist range for 100 cm hips (female): 68 cm to 80 cm. Reducing waist to below 80 cm would move this person to low risk. A 12 cm reduction is achievable with sustained aerobic exercise and a calorie deficit over 6 to 12 months.
WHR = 0.92 | High Risk | Apple (Android)
Try this example →❓ Frequently Asked Questions
What is a healthy waist to hip ratio for women?
Per WHO guidelines, a WHR below 0.80 is considered low risk for women. A ratio between 0.80 and 0.85 is moderate risk. A ratio above 0.85 indicates high risk and is associated with significantly increased likelihood of cardiovascular disease, type 2 diabetes, and metabolic syndrome. Most clinical sources recommend women aim for a WHR of 0.70 to 0.79 for optimal health.
What is a healthy waist to hip ratio for men?
For men, a WHR below 0.90 is low risk per WHO. A ratio between 0.90 and 0.99 is moderate risk. A ratio of 1.00 or above is high risk. Research consistently links WHRs at or above 1.00 in men with substantially increased cardiovascular event rates. Most guidelines suggest men aim for a WHR of 0.80 to 0.89 for optimal metabolic health.
How do I measure my waist accurately for WHR?
Stand straight and exhale normally (do not suck in your stomach). Find the narrowest part of your torso, usually about one inch above your belly button. Wrap a flexible tape measure around that point, parallel to the floor, so it lies flat against the skin without compressing it. Take the reading at the end of a normal exhale. Take two measurements and average them if they differ by more than 1 cm.
Why does WHR use different thresholds for men and women?
Women naturally store more fat in the hips and thighs due to estrogen-driven adipose tissue distribution, resulting in lower WHRs at similar fitness levels. The WHO uses sex-specific thresholds because applying male cutoffs to women would misclassify large numbers of healthy women as high risk. The thresholds are calibrated to the point at which each sex shows increased metabolic disease risk in large population studies.
What is the difference between apple shape and pear shape?
Apple shape (android obesity) means fat is concentrated around the abdomen and internal organs. This visceral fat is metabolically active, releasing inflammatory cytokines and fatty acids directly into the portal circulation. Pear shape (gynoid obesity) means fat is stored mostly in the hips, buttocks, and thighs as subcutaneous fat, which is much less metabolically harmful. WHR above 0.85 (women) or 0.90 (men) generally indicates apple-shaped distribution.
Is WHR more accurate than BMI for health risk?
Multiple studies including INTERHEART (52 countries, 27,000 participants) found WHR to be a stronger predictor of heart attack risk than BMI across all regions and ethnic groups. BMI cannot distinguish fat from muscle or central from peripheral fat distribution. WHR specifically captures abdominal obesity, which drives most of the metabolic risk. Using both together gives the most complete picture.
Can I reduce my WHR with exercise?
Yes, particularly with aerobic exercise. Visceral fat (abdominal fat) is more metabolically active than subcutaneous fat and responds well to sustained cardio. The American Heart Association recommends 150 minutes of moderate aerobic activity per week. Studies show that regular aerobic exercise reduces waist circumference without necessarily changing hip circumference, directly lowering WHR even without total weight loss.
How do I find my ideal waist measurement?
Multiply your hip circumference by 0.80 (females) or 0.90 (males) to find the maximum waist size for low risk. For example, a woman with 100 cm hips should aim for a waist below 80 cm. Use the Ideal Waist Finder tab in this calculator to get your specific target range instantly based on your hip measurement and sex.
Does WHR change as I age?
Yes. Fat distribution tends to shift toward the abdominal area with age, even without significant weight gain. Post-menopausal women especially see WHR rise as estrogen levels drop and fat redistributes from peripheral to central locations. Regular physical activity and maintaining a healthy calorie balance help mitigate this age-related shift, but some increase in WHR with age is normal and expected.
What diseases are linked to high WHR?
A high WHR is associated with type 2 diabetes, cardiovascular disease (heart attack, stroke), hypertension, insulin resistance, non-alcoholic fatty liver disease (NAFLD), sleep apnea, and certain cancers including colorectal and postmenopausal breast cancer. The risk rises progressively with increasing WHR, particularly above the moderate-risk thresholds defined by WHO.
What is a normal WHR for an athletic woman?
Athletic women typically have WHRs between 0.67 and 0.75, well within the low-risk zone. High training volume increases lean muscle mass in the legs and hips while reducing central fat, which pushes WHR lower. Elite female distance runners and cyclists commonly have WHRs below 0.70. However, extreme leanness in female athletes can suppress estrogen and pose other health risks unrelated to WHR.
Should I use waist circumference or WHR to track progress?
Both are useful. Waist circumference is simpler and correlates directly with visceral fat volume. The National Institutes of Health recommends action when waist circumference exceeds 88 cm (women) or 102 cm (men). WHR adds frame-size context and is better for comparing people of different builds. For personal tracking, measuring both waist circumference and WHR monthly gives the clearest picture of central fat reduction over time.