Metabolic health calculators
Instant, research-backed scores from the lab values you already have. Free forever, no account needed — with reference ranges and plain-language interpretation.
HOMA-IR Calculator
Estimate insulin resistance from fasting glucose and insulin — includes the QUICKI sensitivity index.
TyG Index Calculator
Combine fasting triglycerides and glucose into a single insulin-resistance marker — no insulin assay needed.
TG/HDL Ratio Calculator
Pull a cardiometabolic risk signal straight from your standard lipid panel.
Cholesterol Ratio Calculator
Two cholesterol ratios from your standard lipid panel — TC/HDL and LDL/HDL, with reference bands and conversion-free mmol/L math.
VLDL Calculator
Estimate VLDL and LDL cholesterol from a standard lipid panel — the Friedewald equations, with the TG≥400 limits spelled out.
Waist-to-Height Ratio Calculator
Check central adiposity with just a tape measure — keep your waist to less than half your height.
Body Roundness Index (BRI) Calculator
Body Roundness Index from waist + height — the tape-measure metric that models body shape, not just weight.
A Body Shape Index (ABSI) Calculator
A Body Shape Index from waist, height, and weight — with a z-score against people your age and sex (NHANES reference).
Waist-to-Hip Ratio Calculator
Waist ÷ hip with two tape measurements — WHO cut-offs for men and women, and how-to-measure guidance.
Metabolic Syndrome Risk Score
Count how many of the five published metabolic syndrome criteria your numbers currently meet.
ApoB/ApoA1 Ratio Calculator
Measure the balance between atherogenic and protective lipoprotein particles from an advanced lipid panel.
A1c ↔ Average Glucose Converter
Convert A1c to estimated average glucose (eAG) or average glucose back to A1c — bidirectional, with reference chart.
Cholesterol Units Converter (mg/dL ↔ mmol/L)
Convert cholesterol and triglycerides between mg/dL and mmol/L — bidirectional, with the exact factors for each.
Non-HDL Cholesterol Calculator
Total cholesterol minus HDL — all atherogenic particles in one number, no fasting or triglyceride limits.
AIP Calculator (Atherogenic Index of Plasma)
The Atherogenic Index of Plasma — log of TG/HDL linked to LDL particle size, with correct mmol/L handling.
Blood Sugar Converter (mg/dL ↔ mmol/L)
Convert blood glucose between mg/dL and mmol/L — bidirectional with the ÷18 factor and a reference chart.
Numbers are a start — symptoms tell the fuller story.
Our free 3-minute health assessment maps your symptoms to possible root cause patterns and sends you a personalized AI report.
Take the free health assessment →These tools are part of the Brevlix patient acquisition system
Free calculators and assessments attract patients who are already researching their symptoms. Brevlix turns that same pattern into a system for your practice: an AI health assessment on your website that screens patients, captures their details, and sends them a personalized report — before the first appointment.
Patients come to you pre-informed
Every assessment produces a structured archetype report — you see the patient's symptom patterns before you meet them.
Your branding, your website
Embed with one script tag. Colors, logo, and booking link are yours — patients never leave your site.
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13 pre-built clinical assessments. Pick a topic, customize, embed. No per-assessment fees.