CHA₂DS₂-VASc Score Calculator

CHA₂DS₂-VASc Score Calculator for Cardiology. Sex-only scoring does not establish an anticoagulation indication. The output explicitly identifies the non-sex subtotal; the 2024 ESC framework uses CHA2DS2-VA instead of VASc.

For shared guidance on choosing a tool and documenting results, read the clinical calculator workflow.

How this calculator works

Sum heart failure, hypertension, diabetes and vascular disease at one point each, prior stroke/TIA/systemic embolism at two, and age 65 to below 75 at one or age at least 75 at two. The female coefficient adds one. Age categories cannot be counted together.

When to use this calculator

Adult atrial fibrillation risk-factor documentation under a specified guideline, not stroke diagnosis.

Inputs used

  • Age (years)
  • Sex coefficient in the source model
  • Clinical heart failure or left ventricular dysfunction
  • Hypertension history
  • Diabetes mellitus
  • Prior stroke, TIA or systemic thromboembolism
  • Vascular disease: prior myocardial infarction, peripheral arterial disease or aortic plaque

Clinical interpretation

Sex-only scoring does not establish an anticoagulation indication. The output explicitly identifies the non-sex subtotal; the 2024 ESC framework uses CHA2DS2-VA instead of VASc.

Worked example

At age 78, female coefficient with hypertension and diabetes but no other factors gives VASc 5 and a non-sex subtotal of 4. Female sex alone gives 1 and a non-sex subtotal of 0.

Limitations and safety notes

Clinical risk, contraindications, valve disease and guideline choice must be assessed separately. The tool neither prescribes anticoagulation nor supplies a fixed individual annual stroke probability.

Frequently asked questions

Why show a non-sex subtotal?

It makes the sex-modifier distinction explicit and prevents a woman without other scored factors being treated like a person with a non-sex risk factor.

What does this result leave unresolved?

Clinical risk, contraindications, valve disease and guideline choice must be assessed separately. The tool neither prescribes anticoagulation nor supplies a fixed individual annual stroke probability.

References

  • https://pmc.ncbi.nlm.nih.gov/articles/PMC11104284/
  • https://www.escardio.org/static-file/Escardio/Guidelines/Products/Essential%20Messages/2024%20EM/Essential%20Messages_2024%20AFib.pdf

Editorial review and citation methodology

Maintained by the Quick Medical Calculator Editorial Team. Content record date: September 9, 2026. A content date is not evidence of independent clinical review. Individual clinical sign-off is not recorded on this page.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.

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