Health & Fitness
Waist to Hip Ratio Calculator
Waist to Hip Ratio — it computes the waist-to-hip ratio = waist ÷ hip circumference. This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
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
Get waist to hip ratio right and the rest of the task gets easier. It computes the waist-to-hip ratio = waist ÷ hip circumference. It matters when you want a quick screening number before deciding whether a habit, plan or measurement deserves a closer look. An 80 cm waist and 100 cm hips: 80 ÷ 100 = 0.80 ; lower ratios are generally associated with lower risk. The tool above does the same computation in your browser — free, private, nothing stored.
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
Use it for everyday fitness check-ins
Use it for comparing before-and-after
Use it when tracking progress over time
Use it for staying accountable
Use it for gym and home-workout planning
Use it 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.