Educational tool — not a diagnosis. VivMetric calculators estimate body and fitness metrics using CDC, WHO, and NIH reference formulas. They do not provide medical advice, diagnosis, or treatment.
Always consult a licensed healthcare provider for medical concerns. If you are in emotional distress or thinking about harming yourself, contact the 988 Suicide & Crisis Lifeline (call or text 988, US, 24/7) or see the WHO mental-health resources.
Composite Health Index Calculator
Your body is more than one number. This tool combines four evidence-based metrics into a single composite score with a visual radar chart, so you can see at a glance where you are strong and where to focus.
How the composite score works
Each metric is scored 0-100 against a healthy target (BMI 22.5, waist-to-height 0.45-0.50, WHO waist-to-hip thresholds, ACE body-fat ranges). The composite is the average. A score of 80+ means all metrics are in healthy zones; 40 or below flags multiple risk markers.
Why combine four metrics?
BMI alone misclassifies muscular people (high BMI, low fat) and lean-fat people (normal BMI, high fat). Waist measures add independent cardiometabolic risk information, and body fat completes the picture.
Frequently Asked Questions
What is a good composite health index score?
80-100 indicates all or most metrics in healthy zones; 60-79 is good with some attention needed; 40-59 is fair with several elevated markers; below 40 suggests multiple risk markers worth a professional assessment.
Is BMI still useful if I use the composite score?
Yes - BMI remains a valid population screening tool and one input here. The composite simply adds waist-to-height, waist-to-hip, and body fat so muscular or lean-fat individuals are not misclassified.
This tool provides educational health metric estimations only. It is not medical advice, diagnosis, or treatment. Always consult a licensed healthcare provider for medical concerns.