- Measure the waist
Use a consistent anatomical point and keep the tape level without compressing the skin.
- Enter height
Use the same unit as the waist measurement.
- Check the ratio
The calculator divides waist by height and also shows the percentage.
- Use trends carefully
Compare repeated measurements taken under similar conditions rather than relying on one reading.
Waist to Height Ratio Calculator
The Waist-to-Height Ratio Calculator divides waist circumference by height to produce a simple body-proportion measure. Because both measurements use the same unit, the ratio can be compared across centimeters or inches without conversion.
The measure is commonly used as a screening indicator of central body size, but it does not diagnose health conditions or account for body composition, pregnancy, age-specific growth, or individual clinical history.
Calculator inputs
cm
cm
Result
—
Waist-to-height ratio
Waist circumference—
Height—
Waist as % of height—
Waist-to-height ratio = Waist circumference ÷ Height
What the result means
The waist circumference is about 48.6% of height.
Results are estimates based on the values and assumptions entered.
Given: Waist 85 cm and height 175 cm.
Calculation: 85 ÷ 175 = 0.4857.
Result: 0.486, or 48.6%.
The waist circumference is about 48.6% of height.
Can I use inches?
Yes, as long as both waist and height use inches.
Where should I measure the waist?
Use one consistent anatomical point and measurement protocol each time.
Does the ratio measure body fat?
No. It describes circumference relative to height.
Can children use the same interpretation?
Age- and growth-specific guidance may be needed for children and adolescents.
Why track the percentage too?
It expresses the same ratio as waist circumference relative to height.