CHA₂DS₂-VASc Calculator
The AF stroke-risk score that decides anticoagulation conversations — itemised, with annual-risk table.
Guidelines generally discuss anticoagulation from score ≥1 in men / ≥2 in women (the female point only counts alongside another factor). The decision pairs this against bleeding risk (HAS-BLED) and patient preference — DOACs changed the trade-off substantially. A score is the start of that consultation, never its conclusion.
Formula
Reference aid for healthcare professionals only. Every result must be independently verified before clinical use. Never use this tool for self-medication or to replace clinical judgement.
The AF stroke-risk score that decides anticoagulation conversations — itemised, with annual-risk table. The CHA₂DS₂-VASc Calculator is a free, private cha2ds2 vasc tool — every result computes instantly in your browser with no sign-up and no data upload.
About CHA₂DS₂-VASc Calculator
Guidelines generally discuss anticoagulation from score ≥1 in men / ≥2 in women (the female point only counts alongside another factor). It applies C(1) H(1) A₂(2 if 75+) D(1) S₂(2) V(1) A(1 if 65–74) Sc(1 if female). Use the CHA₂DS₂-VASc Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use CHA₂DS₂-VASc Calculator
- 1Enter your details in the CHA₂DS₂-VASc Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use CHA₂DS₂-VASc Calculator?
- ✓Instant cha2ds2 vasc result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Lip GYH et al., Chest 2010 — CHA₂DS₂-VASc derivation)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the CHA₂DS₂-VASc Calculator work?+
Guidelines generally discuss anticoagulation from score ≥1 in men / ≥2 in women (the female point only counts alongside another factor). The calculation uses the formula: C(1) H(1) A₂(2 if 75+) D(1) S₂(2) V(1) A(1 if 65–74) Sc(1 if female). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the CHA₂DS₂-VASc Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources, including Lip GYH et al., Chest 2010 — CHA₂DS₂-VASc derivation; ESC 2020 AF guidelines. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the CHA₂DS₂-VASc Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This is a reference aid for healthcare professionals and must be independently verified. It is not for self-diagnosis or self-medication.
What can I use the CHA₂DS₂-VASc Calculator for?+
It's commonly used for cha2ds2 vasc, af stroke risk, atrial fibrillation score. The AF stroke-risk score that decides anticoagulation conversations — itemised, with annual-risk table.
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