Health & Fitness
Waist-to-Hip Ratio Calculator
Use this waist-to-hip ratio calculator as an educational body-measurement tool when you want a quick ratio from two circumference measurements.
Waist-to-hip ratio
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- Waist as percent of hip
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Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the waist-to-hip ratio calculator solves
Use this waist-to-hip ratio calculator as an educational body-measurement tool when you want a quick ratio from two circumference measurements.
Formula
How to use it
- Measure waist and hips in the same unit.
- Enter both measurements.
- Read the ratio.
How to read the answer
The ratio compares waist size with hip size and is sometimes used as a health-risk screening metric. It is best read as one rough context number, not a full health profile.
Common mistakes and edge cases
- Use the same unit for both measurements.
- Do not use clothing sizes.
- Screening tools do not replace medical advice.
Worked examples
Typical measurement
Waist-to-hip ratio
0.8
Equal waist and hip
Waist-to-hip ratio
1
Frequently asked questions
Can I use centimeters?+
Yes. Any unit works if both measurements use the same unit.
Is waist-to-hip ratio better than BMI?+
They measure different things. Neither is a complete health assessment, and both should be interpreted with clinical context when health decisions are involved.
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Last updated: May 8, 2026