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Waist-to-Height Ratio Calculator

Health & Body

Waist ÷ height — central obesity grading

Quick Answer

Waist-to-Height Ratio Calculator: Waist ÷ height — central obesity grading. Waist-to-Height Ratio Calculator uses standard health formulas to compute accurate results instantly.

Waist-to-height ratio

0.500

Increased risk

Your ratio0.500
Waist limit (0.5×H)85 cm
Over/under limit0.0 cm
CN waist stdPre-obesity

WHtR zones (Ashwell)

Underweight?
Healthy
Take action
High risk

WHtR 0.500

Steps

  1. 1WHtR = 85 ÷ 170 = 0.500
  2. 2Boundary 0.5 → your waist limit = 170 × 0.5 = 85 cm
  3. 30.0 cm of headroom below the limit
  4. 4CN standard (male): <85 normal, 85-89 pre-obesity, ≥90 central obesity → yours: 85cm

💡 "Keep your waist to less than half your height" — WHtR beats BMI at predicting cardiometabolic risk because it captures visceral fat, and it works across sexes, ages, and ethnicities with one boundary: 0.5. Measure at the navel, standing relaxed, at the end of a normal exhale — don't suck in.

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How to Use

  1. Enter body metrics: fill height, weight, age etc. as prompted by the Waist-to-Height Ratio Calculator.
  2. Read value and grade: results appear instantly with an authority-based classification.
  3. Check reference tables: confirm your range and healthy targets against the tables on this page.
  4. Back-solve your goal: adjust inputs to see what it takes to reach a target.

Key Points

  • Waist-to-Height Ratio Calculator is a free online health tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Waist ÷ height — central obesity grading.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Waist-to-Height Ratio Calculator formula

Waist-to-Height Ratio Calculator uses standard health formulas to compute accurate results instantly.

FAQ

How do I use the Waist-to-Height Ratio Calculator?
Open the page and fill in the input fields — results update automatically. Waist ÷ height — central obesity grading.
Are the results accurate?
Results follow published international standards (WHO, ACE, IOM) and are for reference only.
Can this replace medical advice?
No. Always consult a qualified healthcare professional for health decisions.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on all devices.

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Source & Updates

Based on WHO, ACE, IOM and other published international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Waist-to-Height Ratio Calculator[EB/OL]. https://www.yijiansuan.com/en/c/health/whtr

Results provided by this tool are for reference only and do not constitute professional advice.