Conversion
Enter measurements
Use the same unit for waist, hip, and height. Height and weight are optional but improve the weight context.
Formula used
The main formula is hip to waist ratio = waist circumference ÷ hip circumference.
The target waist formula is target waist = target ratio × hip circumference.
When height and weight are entered, BMI is estimated with BMI = weight kg ÷ height m².
Waist to height ratio is estimated with waist circumference ÷ height.
How to use this calculator
- Choose the profile that matches your guide range.
- Select centimeters or inches for body measurements.
- Enter waist and hip measurements using the same unit.
- Add height and weight if you need BMI context.
- Enter a target ratio or leave it blank.
- Press the calculate button and review the result.
- Download CSV or PDF for tracking records.
Example data table
| Profile |
Waist |
Hip |
Ratio |
Guide range |
Target waist note |
| Female |
70 cm |
95 cm |
0.737 |
Lower range |
Near common target |
| Male |
94 cm |
100 cm |
0.940 |
Moderate range |
Needs 4 cm reduction for 0.90 |
| Female |
34 in |
42 in |
0.810 |
Moderate range |
Needs 0.4 in reduction for 0.80 |
| Male |
105 cm |
100 cm |
1.050 |
Higher range |
Needs 15 cm reduction for 0.90 |
Understanding hip to waist ratio
Hip to waist ratio compares your waist size with your hip size. It is a simple body proportion check. The result shows where body mass may be stored. A higher value can suggest more central weight. Central weight often matters because it may relate to fitness planning and health screening.
Why this calculator adds weight context
This calculator adds more context than a basic ratio tool. It accepts inches or centimeters. It also accepts kilograms or pounds. When height and weight are supplied, it estimates BMI and a healthy weight range. These values do not replace medical advice. They help you organize measurements before a diet, training, or wellness review.
How the ratio works
The main ratio is waist divided by hip. A smaller waist compared with hip gives a lower ratio. A larger waist compared with hip gives a higher ratio. Men and women often use different guide ranges. The calculator therefore lets you choose a profile. You can also use a custom target ratio. That target shows the waist size needed at your current hip measurement.
Weight limits and tracking
Weight is handled carefully. Hip to waist ratio cannot directly tell exact body weight. Two people can share the same ratio and weigh very different amounts. Height, muscle, bone structure, and hydration change weight. For that reason, this page adds BMI only when height and weight are entered. It also shows a healthy weight band based on common BMI boundaries.
Better measurement habits
Use the result as a tracking aid. Measure at the same time of day. Stand relaxed. Keep the tape level. Do not pull it too tight. Record readings weekly or monthly. Small changes are easier to understand when the method stays consistent. Add notes about clothing, meals, and workouts. These details explain sudden changes. They also make long term trends clearer and fairer.
Saving your results
The export buttons help save progress. CSV is useful for spreadsheets. PDF is useful for reports. The example table shows realistic inputs and outputs. You can compare your own values with those samples. For best results, combine this tool with waist circumference, activity level, diet quality, and professional guidance. Repeat the same tape position each session. Save every result with a clear date. Review progress patiently and safely today.
FAQs
What is hip to waist ratio?
It is waist circumference divided by hip circumference. It compares two body measurements. The result helps describe body fat distribution and shape. It does not measure total body fat or diagnose a condition.
Can this calculator calculate exact weight?
No. Hip to waist ratio cannot directly calculate exact body weight. This tool adds BMI and healthy weight range estimates when height and weight are entered. Those estimates provide useful context only.
Which unit should I use?
You can use centimeters or inches. Keep waist, hip, and height in the same measurement unit. The tool converts internally and displays results in your selected unit.
Where should I measure my waist?
Measure around the narrowest comfortable point near your natural waist. Keep the tape level. Stand relaxed. Do not pull the tape tightly because that can distort the result.
Where should I measure my hips?
Measure around the widest part of your hips and buttocks. Keep the tape parallel to the floor. Use the same method each time for better tracking.
What target ratio should I enter?
You may leave the field blank. The calculator uses a guide target based on profile. You can also enter your own target from a coach, clinician, or tracking plan.
Why is height optional?
Height is not required for hip to waist ratio. It is only needed for waist to height ratio and BMI. Add it when you want extra body size context.
Are the results medical advice?
No. The output is for education and tracking. It can support personal planning, but it cannot replace advice from a qualified health professional.