Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio from centimetre measurements to assess body fat distribution and related health risk category.
Your results
Calculation breakdown
- Ratio
- Waist-to-hip ratio = waist circumference ÷ hip circumference
Worked example
A man with an 85 cm waist and 100 cm hips has a waist-to-hip ratio of 0.85, below the 0.90 threshold generally associated with higher health risk.
Assumptions
- Uses WHO reference thresholds of 0.90 (men) and 0.85 (women) for higher risk.
- Measurements should be taken with a flexible tape, standing relaxed.
How this calculator works
This calculator divides your waist circumference by your hip circumference to give your waist-to-hip ratio, a simple measure used to assess body fat distribution and associated health risk categories published by the World Health Organization. Enter both measurements in centimetres for the most accurate result.
Frequently asked questions
What is a healthy waist-to-hip ratio?
Generally a ratio below 0.90 for men and below 0.85 for women is considered lower risk, though this varies by population and body type.
Where do I measure my hips?
Measure around the widest part of your hips and buttocks, keeping the tape level and snug but not compressing the skin.
Is this better than BMI?
Waist-to-hip ratio reflects fat distribution rather than overall size, giving different information to BMI rather than replacing it.
Results are estimates only and are not financial, tax, legal or credit advice.