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BMI & Health Risk Calculator

Comprehensive body composition & abdominal adiposity screening. Calculate BMI, WHtR, WHR, and regional IDF risk indicators.

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Health Risk Inputs

Unit System

Biological Gender

Abdominal Risk Inputs (Optional)

Health Risk Summary

BMI Score
24.2
Normal weight
Waist Risk
Enter Waist
Waist-Height Ratio
Enter Waist
Waist-Hip Ratio
Enter Hip (Opt)

🔒 Screening tool, not a medical diagnosis — consult a qualified healthcare provider for clinical assessments.

Understanding BMI & Abdominal Health Risk Assessment

While Body Mass Index (BMI) remains a widely used screening metric, modern clinical research emphasizes that abdominal adiposity—measured via Waist Circumference and Waist-to-Height Ratio—provides crucial insight into metabolic and cardiovascular risk.

How to Conduct a Comprehensive Screening

  1. Step 1: Height & Weight - Input height and weight to calculate baseline Body Mass Index (BMI).
  2. Step 2: Biological Sex & Ethnicity - Select your sex and region to apply ethnic-specific IDF waist circumference thresholds.
  3. Step 3: Waist & Hip Circumference - Add waist circumference to calculate Waist-to-Height Ratio (WHtR) and Waist-to-Hip Ratio (WHR).

Wellness Insight

Want to know exactly how BMI is calculated and where it can be misleading?

Read our full BMI Guide

Frequently Asked Questions

A healthy BMI typically falls between 18.5 and 24.9. Below 18.5 is underweight, 25–29.9 is overweight, and 30+ is obese.
BMI alone cannot distinguish muscle from fat or measure abdominal adiposity. Waist circumference and Waist-to-Height ratio (WHtR) directly measure visceral fat, which is strongly linked to cardiovascular and metabolic risks.
A healthy guideline is to keep your waist circumference to less than half your height (WHtR < 0.50).
Cardiovascular and type 2 diabetes risks occur at lower body fat levels in certain populations, such as South Asian, Chinese, and Japanese groups.

Every tool runs entirely in your browser. No sign-up, no data collection, no unnecessary steps.

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