CHADS2 Score Calculator
Stroke risk stratification in non-valvular atrial fibrillation.
Important Health Disclaimer
This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.
For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.
Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.
Not a substitute for professional medical advice
CHADS2 Criteria
Select all criteria that apply:
Important Note
CHA₂DS₂-VASc is now preferred over CHADS2 for more refined risk stratification, especially in identifying truly low-risk patients (CHA₂DS₂-VASc = 0).
CHADS2 Score
0/6
Annual Stroke Rate: 1.9%
Recommendation
Low risk. Aspirin or no therapy may be considered.
Annual Stroke Risk by Score
- Score 0: 1.9% per year
- Score 1: 2.8% per year
- Score 2: 4.0% per year
- Score 3: 5.9% per year
- Score 4: 8.5% per year
- Score 5: 12.5% per year
- Score 6: 18.2% per year
CHADS2 Mnemonic
- C - Congestive heart failure (+1)
- H - Hypertension (+1)
- A - Age ≥75 (+1)
- D - Diabetes (+1)
- S₂ - Stroke/TIA (+2)
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