Waist-to-Hip (WH) Ratio Calculator
Enter your waist and hip measurements using the same unit (inches or centimeters), then choose sex for guideline-based interpretation.
What is a WH ratio?
A WH ratio usually means waist-to-hip ratio (WHR). It compares the size of your waist to the size of your hips:
WHR = Waist circumference ÷ Hip circumference
This simple number helps estimate how body fat is distributed. In general, more abdominal fat (a higher ratio) is associated with a higher risk for metabolic and cardiovascular conditions.
How to measure correctly
1) Waist
- Stand relaxed and breathe out normally.
- Measure around the narrowest part of your torso (or just above the belly button if no narrow point is obvious).
- Keep the tape snug but not tight.
2) Hips
- Measure around the widest part of your hips and buttocks.
- Keep the measuring tape level all the way around.
3) Use the same unit
You can use inches or centimeters, but both measurements must use the same unit. Since this calculator divides one by the other, units cancel out.
WH ratio interpretation chart
Commonly used guideline cutoffs:
| Sex | Low Risk | Moderate Risk | High Risk |
|---|---|---|---|
| Male | < 0.90 | 0.90 to 0.99 | ≥ 1.00 |
| Female | < 0.80 | 0.80 to 0.85 | > 0.85 |
Why WH ratio matters
Two people can have similar weight or BMI but very different fat distribution. WH ratio helps capture that difference. A higher ratio can suggest a greater concentration of abdominal fat, which is often linked with:
- Insulin resistance and type 2 diabetes risk
- Higher blood pressure
- Adverse cholesterol patterns
- Increased cardiovascular disease risk
WH ratio vs BMI vs waist circumference
Body Mass Index (BMI)
BMI is useful for population-level screening, but it does not tell you where fat is stored.
Waist circumference alone
Waist size is easy and useful, but adding hip measurement provides extra context.
WH ratio
WH ratio adds body-shape information and can be a helpful complement to BMI and waist circumference.
How to improve your WH ratio
You cannot spot-reduce fat in one exact area, but you can reduce abdominal fat over time through consistent habits:
- Nutrition: prioritize protein, fiber, and minimally processed foods.
- Strength training: 2 to 4 sessions per week supports lean mass and metabolic health.
- Cardio: combine moderate activity and occasional vigorous sessions as tolerated.
- Sleep: aim for consistent, high-quality sleep.
- Stress management: chronic stress can worsen abdominal fat patterns.
- Track progress monthly: use the same measurement method each time.
Frequently asked questions
Is a lower WH ratio always better?
Lower is generally better within normal healthy ranges, but extremely low values can also reflect undernutrition in some cases. Aim for balanced health, not just one metric.
Can I use this calculator for men and women?
Yes. The calculation is identical, but interpretation thresholds differ by sex.
How often should I check my ratio?
Every 2 to 4 weeks is usually enough. Daily checks are unnecessary and can be misleading.
Bottom line
A WH ratio calculator is a quick way to estimate whether your fat distribution may raise long-term health risk. Use it as a screening tool alongside blood pressure, lab markers, fitness, and overall lifestyle. If your value is consistently high, consider discussing it with a qualified healthcare professional.