Waist-to-Hip Ratio = Waist Circumference ÷ Hip Circumference
Waist-to-Hip Ratio Calculator
A Waist-to-Hip Ratio Calculator compares waist circumference with hip circumference. It divides the waist measurement by the hip measurement and reports the result as a decimal ratio and percentage.
The result can support fitness tracking, body-measurement records, and general awareness of body proportions. It is a screening and tracking value rather than a medical diagnosis.
Waist-to-Hip Percentage = (Waist ÷ Hips) × 100
Calculate your waist-to-hip ratio
The interactive calculator fields are intentionally excluded from this standalone content page. Open the live calculator to enter your waist and hip measurements.
Open the live calculatorWhat Is a Waist-to-Hip Ratio Calculator?
This calculator compares the size of your waist with the size of your hips. The result is commonly abbreviated as WHR, which stands for waist-to-hip ratio.
For example, a 32-inch waist and 40-inch hips produce a WHR of 0.80. In percentage terms, the waist measurement is equal to 80% of the hip measurement.
Circumference input
Enter the measurement around your waist using a consistent anatomical point.
Hip measurement input
Enter the circumference around the widest part of the hips and buttocks.
Ratio and percentage
The calculator divides waist by hips and displays the result in decimal and percentage form.
Waist-to-Hip Ratio Formula
The calculation uses two circumference measurements. Both values must be recorded in the same unit before dividing.
WHR = Waist Circumference ÷ Hip Circumference
A result of 0.80 means the waist circumference is 0.80 times the hip circumference.
WHR Percentage = WHR × 100
A ratio of 0.80 becomes 80% after multiplying by 100.
Unit rule: Use inches for both measurements or centimeters for both measurements. Do not divide an inch value by a centimeter value.
How to Calculate Waist-to-Hip Ratio Manually
Measure your waist
Record the waist circumference. Example: 34 inches.
Measure your hips
Use the same unit and record the hip circumference. Example: 42 inches.
Divide waist by hips
Calculate 34 ÷ 42 to get approximately 0.8095.
Round the ratio
Rounded to two decimal places, the WHR is 0.81.
Convert to percentage form
Multiply 0.8095 by 100 to get approximately 80.95%.
Worked Examples
Waist-to-hip ratio in inches
A person has a 32-inch waist and 40-inch hips.
32 ÷ 40 = 0.80
The waist-to-hip ratio is 0.80, or 80%.
Waist-to-hip ratio in centimeters
A person has a 78 cm waist and 100 cm hips.
78 ÷ 100 = 0.78
The waist-to-hip ratio is 0.78, or 78%.
A higher ratio
A person has a 38-inch waist and 40-inch hips.
38 ÷ 40 = 0.95
The waist is equal to 95% of the hip measurement.
Tracking progress over time
A person changes from a 36-inch waist and 42-inch hips to a 33-inch waist and 41-inch hips.
36 ÷ 42 = 0.86 | 33 ÷ 41 = 0.81
The ratio decreases from approximately 0.86 to 0.81.
Finding waist size from a target ratio
A person has 40-inch hips and wants a WHR of 0.80.
40 × 0.80 = 32 inches
A 32-inch waist produces a ratio of 0.80 when the hip measurement is 40 inches.
Waist-to-Hip Ratio Chart
The following adult reference points are commonly used for general screening. They are not diagnoses, and interpretation can vary with personal circumstances.
| Group | Common Reference Point | General Meaning |
|---|---|---|
| Men | Above 0.90 | Often discussed as a higher abdominal-obesity reference point. |
| Women | Above 0.85 | Often discussed as a higher abdominal-obesity reference point. |
| General | Depends on context | Useful for tracking body shape and waist size in relation to hips. |
Age, sex, ethnicity, body composition, medical history, and other health markers can affect interpretation. Use WHR for general awareness and progress tracking rather than as a final health assessment.
How to Use the Waist-to-Hip Ratio Calculator
Select gender
Choose male, female, or general to receive the available broad reference interpretation.
Select a measurement unit
Choose centimeters or inches. Both circumference values must use that same unit.
Enter the measurements
Provide waist and hip circumference, then calculate to view the decimal ratio and percentage equivalent.
What Each Field Means
Measurement around the waist
Record this value at a consistent point so progress comparisons remain useful.
Measurement around the hips
Measure around the widest part of the hips and buttocks according to your chosen protocol.
Waist divided by hips
A result of 0.80 indicates that the waist is 80% of the hip circumference.
Inches or centimeters
Either system works, provided both inputs use the same unit.
How to Measure Waist Correctly
Careful and consistent waist measurement produces a more useful WHR result.
Use a flexible measuring tape.
Stand upright with your body relaxed.
Keep the tape level around your body.
Make the tape snug without pulling tightly.
Measure after a normal breath out.
Do not draw in your stomach.
Use the same measurement point each time.
Some protocols use the narrowest part of the waist, while others use an abdominal point near the navel. For progress tracking, follow one method consistently.
How to Measure Hips Correctly
The hip value is the denominator in the WHR calculation, so even a small error can affect the final result.
Stand naturally with your feet close together.
Wrap the tape around the widest part of the hips and buttocks.
Keep the tape horizontal all the way around.
Avoid pulling the tape into the skin.
Repeat the measurement when uncertain.
Use the average of repeated measurements when helpful.
Waist-to-Hip Ratio vs BMI
| Waist-to-Hip Ratio | BMI |
|---|---|
| Compares waist circumference with hip circumference. | Compares body weight with height. |
| Focuses on body shape and waist size relative to the hips. | Does not show where body weight is distributed. |
| Formula: waist ÷ hips. | Formula: weight ÷ height squared. |
| Useful for body-measurement tracking and general awareness. | Useful for basic weight-to-height screening. |
The two measures answer different questions, and neither provides a complete health or body-composition assessment on its own.
Waist-to-Hip Ratio vs Other Measurements
Hips compared with height
WHR compares waist circumference with hip circumference. A Waist-to-Height Ratio Calculator compares waist circumference with total height. The two ratios describe different body proportions.
Body shape compared with fat mass
WHR does not directly calculate total body fat. A Body Fat Percentage Calculator estimates how much of total body weight is represented by fat mass.
Applications of Waist-to-Hip Ratio
Monitor body-shape changes
Record WHR during weight loss, strength training, or general fitness programs.
Maintain progress logs
Store results in journals, spreadsheets, mobile apps, or coaching reports.
Review abdominal-fat distribution
Use WHR as one general body measurement related to waist size and fat distribution.
Look beyond scale weight
Add information about waist and hip proportions to ordinary body-weight tracking.
Combine several indicators
Review WHR alongside activity, nutrition, habits, and other body measurements.
Track body proportions
Use waist and hip measurements for size planning and changes in body shape.
Tips for Accurate WHR Calculations
Use the same unit for waist and hips.
Measure both circumferences carefully.
Keep the tape level around the body.
Do not pull the tape too tightly.
Stand naturally and remain relaxed.
Use the same measurement points every time.
Repeat measurements when uncertain.
Round only after completing the calculation.
Record the date with each result.
Use WHR as one measure rather than the only health indicator.
Common Mistakes
Mixing inches and centimeters
Both values must use one measurement unit before the ratio is calculated.
Measuring hips at the wrong point
Hip circumference is generally taken around the widest part of the hips and buttocks.
Pulling the tape too tightly
A compressed measurement can make waist or hip circumference appear smaller than it is.
Using height instead of hips
WHR uses waist and hip circumference. Height is used in a different body ratio.
Treating WHR as body fat percentage
A WHR of 0.80 means the waist is 80% of hip size; it does not mean the body is 80% fat.
Treating the result as a diagnosis
The ratio is a general screening and progress-tracking measure, not medical advice.
Frequently Asked Questions
What is a Waist-to-Hip Ratio Calculator?
It divides waist circumference by hip circumference to calculate WHR.
How do you calculate waist-to-hip ratio?
Divide waist circumference by hip circumference, using the same unit for both values.
What does waist-to-hip ratio mean?
It shows how the waist measurement compares with the hip measurement. A result of 0.80 means the waist is 80% of hip size.
What reference point is commonly discussed for men?
A ratio above 0.90 is often used as a higher abdominal-obesity reference point for men.
What reference point is commonly discussed for women?
A ratio above 0.85 is often used as a higher abdominal-obesity reference point for women.
Can I use inches?
Yes. Measure both waist and hips in inches.
Can I use centimeters?
Yes. Measure both waist and hips in centimeters.
Is WHR the same as BMI?
No. BMI compares weight with height, while WHR compares waist circumference with hip circumference.
Is WHR the same as body fat percentage?
No. WHR describes a body proportion; body fat percentage estimates the share of body weight represented by fat.
How should I measure my hips?
Use a flexible tape around the widest part of the hips and buttocks. Keep the tape level and snug without pulling tightly.
Is this calculator medical advice?
No. It is intended for general information and measurement tracking and does not replace advice from a qualified healthcare professional.
Related Calculators
Waist-to-Height Ratio Calculator
Compare waist circumference with total height.
Body Fat Percentage Calculator
Estimate the percentage of body weight represented by fat mass.
US Navy Body Fat Calculator
Estimate body fat using height and circumference measurements.
Weight Loss Percentage Calculator
Calculate weight change relative to a starting weight.
Lean Body Mass Percentage Calculator
Estimate the proportion of body weight represented by lean mass.
Percentage Change Calculator
Compare an earlier measurement with a later value as a percentage.
Final Note
A Waist-to-Hip Ratio Calculator provides a straightforward way to compare waist and hip circumference. It can support body-measurement records, fitness progress, and general body-proportion awareness.
Health disclaimer: Use the result as a general screening and tracking value, not as a medical diagnosis. A qualified healthcare professional can interpret body measurements in the context of your health history and other relevant information.