Health & Fitness
Waist to Hip Ratio Calculator
Waist to Hip Ratio Calculator is a browser-based calculator tool on CalcToolsBase. Calculate your waist-to-hip ratio and see the associated risk band by sex. To use it, enter your values and view the result directly in your browser — no signup and nothing to install.
Waist to Hip Ratio Calculator turns your waist circumference, hip circumference and sex into your ratio and its risk band using waist ÷ hip. The maths runs locally, so nothing you enter leaves the page.
About this calculator
Waist to Hip Ratio Calculator exists to work out your waist-to-hip ratio with the least fuss. From your waist circumference, hip circumference and sex it derives your ratio and its risk band using waist ÷ hip, all on your device. There are no accounts, no adverts in the result, and nothing leaves your browser.
Risk bands are general guidance and depend on accurate measurement. The ratio is one signal among many and does not, on its own, diagnose any condition.
How to use
- Measure and enter your waist circumference in cm.
- Measure and enter your hip circumference in cm.
- Select your sex for the correct risk bands.
- Press Calculate to see your ratio and band.
Why use Waist to Hip Ratio Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Educational
Uses common estimation formulas for educational purposes. Results are not medical advice and should not replace professional guidance.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Clear about formulas used and their limits, with disclaimers where they matter.
Common uses
Waist to Hip Ratio for everyday fitness check-ins
Waist to Hip Ratio for comparing before-and-after
Waist to Hip Ratio when tracking progress over time
Waist to Hip Ratio for staying accountable
Waist to Hip Ratio for gym and home-workout planning
Waist to Hip Ratio when planning a fitness routine
Technical notes
Waist to Hip Ratio Calculator computes the waist-to-hip ratio = waist ÷ hip circumference.
These are general-population estimates and not a substitute for advice from a qualified clinician.
Because it runs locally, results appear instantly with no server round-trip.
FAQ
How is waist-to-hip ratio calculated?
Divide waist circumference by hip circumference. An 80 cm waist with 100 cm hips gives 0.80.
Why are the bands different for men and women?
Average fat distribution differs by sex, so health organisations use separate waist-to-hip thresholds for males and females.
Where should I measure waist and hips?
Measure the waist at its narrowest point and the hips at their widest, keeping the tape level and snug but not compressing the skin.
Does the Waist to Hip Ratio Calculator send my data to a server?
No. The Waist to Hip Ratio Calculator runs entirely in your browser — your inputs never leave your device, and nothing is uploaded or stored.
Worked example
An 80 cm waist and 100 cm hips: 80 ÷ 100 = 0.80; lower ratios are generally associated with lower risk.