- Measure the waist
Keep the tape horizontal and record the circumference without pulling tightly.
- Measure the hips
Measure around the widest part of the buttocks using the same unit.
- Calculate the ratio
The tool divides waist circumference by hip circumference.
- Interpret cautiously
Use the ratio alongside other health information and professional guidance where appropriate.
Waist to Hip Ratio Calculator
The Waist-to-Hip Ratio Calculator compares waist circumference with hip circumference. The result summarizes where body circumference is distributed and can be tracked over time when both measurements are taken consistently.
It is a screening measure only. Measurement technique, body shape, pregnancy, recent weight change, and medical context affect interpretation, so the number should not be treated as a standalone diagnosis.
Calculator inputs
cm
cm
Result
—
Waist-to-hip ratio
Waist circumference—
Hip circumference—
Waist as % of hip—
Waist-to-hip ratio = Waist circumference ÷ Hip circumference
What the result means
The waist circumference is 85% of the hip circumference.
Results are estimates based on the values and assumptions entered.
Given: Waist 85 cm and hips 100 cm.
Calculation: 85 ÷ 100 = 0.85.
Result: 0.850, or 85.0%.
The waist circumference is 85% of the hip circumference.
Must both measurements use the same unit?
Yes. The unit cancels only when waist and hips use the same unit.
Where is hip circumference measured?
Typically around the widest part of the buttocks, with the tape level.
Does the ratio show total body fat?
No. It describes circumference distribution rather than total fat mass.
Can clothing affect the result?
Yes. Bulky clothing and tape compression can change measurements.
How is this different from waist-to-height ratio?
Waist-to-hip compares two circumferences; waist-to-height scales waist by stature.