Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) — a measure of body fat distribution that predicts cardiovascular disease risk better than BMI alone.
This free online waist-to-hip ratio calculator provides instant results with no signup required. All calculations run directly in your browser — your data is never sent to a server. Enter your values below and see results update in real time as you type. Perfect for everyday calculations, homework, or professional use.
Measure at narrowest point
Measure at widest point
How to Use This Calculator
Enter your input values
Fill in all required input fields for the Waist-to-Hip Ratio Calculator. Most fields include unit selectors so you can work in your preferred unit system — metric or imperial, whichever matches your problem.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors and can produce results that are off by factors of 2, 10, or more.
Read the results
The Waist-to-Hip Ratio Calculator instantly computes the output and displays results with units clearly labeled. All calculations happen in your browser — no loading time and no data sent to a server.
Explore parameter sensitivity
Try adjusting individual input values to see how the output changes. This is a quick and effective way to develop intuition about how different parameters influence the result and to identify which inputs have the largest effect.
Formula Reference
Waist-to-Hip Ratio Calculator Formula
See calculator inputs for the governing equation
Variables: All variables and their units are labeled in the calculator interface above. Input fields accept values in multiple unit systems — select your preferred unit from the dropdown next to each field.
When to Use This Calculator
- •Use the Waist-to-Hip Ratio Calculator for personal health tracking and wellness monitoring, establishing a baseline and tracking changes over time.
- •Use it when recording fitness metrics to track progress toward health or athletic goals.
- •Use it to compare measurements before and after a lifestyle, diet, or training change to quantify the impact.
- •Use it as a conversation starter before a doctor's appointment, bringing objective data to discuss with a healthcare professional.
About This Calculator
The Waist-to-Hip Ratio Calculator is a free health and wellness calculation tool designed for personal use and general informational purposes. Calculate your waist-to-hip ratio (WHR) — a measure of body fat distribution that predicts cardiovascular disease risk better than BMI alone. This calculator provides reference values based on established health screening formulas and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Results may vary based on individual factors not captured by the calculation. Consult a qualified healthcare provider for personalized health guidance. All calculations are performed locally in your browser — no personal health data is transmitted or stored.
About Waist-to-Hip Ratio Calculator
The Waist-to-Hip Ratio Calculator measures how your body fat is distributed between your abdomen (apple shape) and hips (pear shape). WHR is a better predictor of cardiovascular disease, stroke, and type 2 diabetes than BMI because it captures where fat is stored, not just how much. Visceral abdominal fat — the kind that accumulates around organs — is metabolically active and releases inflammatory compounds that increase disease risk. The World Health Organization classifies WHR > 0.90 for men and > 0.85 for women as indicating central obesity.
The Math Behind It
Formula Reference
WHR
WHR = Waist / Hip
Variables: Same units (cm or inches)
Worked Examples
Example 1: Apple Shape (Male)
Waist 100 cm, Hip 95 cm
WHR of 1.05 — high cardiovascular risk. Abdominal fat reduction is recommended.
Example 2: Pear Shape (Female)
Waist 70 cm, Hip 100 cm
WHR of 0.70 — low risk, healthy fat distribution.
Common Mistakes & Tips
- !Measuring waist at the wrong spot. For WHR, measure at the narrowest point between rib cage and iliac crest.
- !Measuring hips at the wrong spot. Measure at the widest point around the buttocks.
- !Comparing WHR across very different body types without considering that muscular individuals may have naturally higher waist measurements.
Related Concepts
Used in These Calculators
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Frequently Asked Questions
Which is better: WHR or BMI?
WHR is a better predictor of cardiovascular disease risk than BMI. A 2007 study of over 27,000 people in 52 countries found that WHR was 2-3 times more predictive of heart attack risk than BMI. However, BMI is easier to measure and still useful for population-level obesity screening.
Can you reduce WHR through exercise?
Yes. Reducing abdominal fat through calorie deficit and regular exercise (especially cardiovascular and high-intensity training) lowers waist circumference faster than hip circumference. Resistance training that builds gluteal muscle can also increase hip measurement, further improving WHR.