Flagship
Heart Age & CV Risk
Turn your blood pressure and cholesterol into a heart age and a 10-year cardiovascular risk, using the validated Framingham model.
Calculate my heart age →
Tools & calculators
Tools & Calculators
Free, evidence-based tools to help you make sense of your numbers and have better conversations with your own doctor. Pick one to get started.
Tools & calculators
Make sense of your numbers
Free, evidence-based calculators built from published medical research — no sign-up, no data stored, nothing leaves your browser. Use them to understand your results and have a better conversation with your own doctor.
New · 2026 guideline
10 & 30-Year Risk (PREVENT)
Your 10-year and 30-year cardiovascular risk on the AHA PREVENT equations — the race-free model now used in US guidelines, and the only one giving a true long-range number.
Calculate my risk →
New
Blood Pressure Category
Enter a reading and see which category it falls into — on both the US and European guidelines — with what the number actually means.
Classify a reading →
New
Cholesterol Ratios & Non-HDL
Non-HDL cholesterol, total-to-HDL and triglyceride-to-HDL ratios from your lipid panel — with the optimal ranges, in mmol/L or mg/dL.
Work out my ratios →
Cholesterol
ApoB Percentile
See where your ApoB sits on the population curve for your age and sex — and why “average for your age” isn’t the same as optimal.
Find my percentile →
Cholesterol
Estimate ApoB from a Panel
No direct ApoB result? Estimate it from the cholesterol numbers you already have, using a validated equation.
Estimate my ApoB →
New · Genetic risk
Lp(a) Converter & Risk
Convert lipoprotein(a) between nmol/L and mg/dL and see which risk band you’re in — for the inherited risk factor one in five people carry.
Convert & interpret →
New · Metabolic
Waist-to-Height & BMI
The single best everyday marker of harmful central fat — plus BMI, with the lower thresholds that apply to people of Asian descent.
Check my ratio →
Checklist
Cardiac Screening Checklist
The same starting checklist I use in clinic — what to test, when, and how often. Download it free and bring it to your appointment.
Get the checklist →
Built from published, peer-reviewed research
Nothing is stored or sent — it all runs in your browser
Free, with no sign-up