HAS-BLED Score Calculator

Calculate the HAS-BLED score to estimate the risk of major bleeding in patients on anticoagulation for atrial fibrillation.

Medical Disclaimer

This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.

Inputs

Hypertension (Uncontrolled, >160 mmHg)

Abnormal Renal Function

Abnormal Liver Function

Prior Stroke

Prior Bleeding

Labile INR

Elderly (Age >65)

Drugs (Antiplatelet/NSAIDs)

Alcohol Excess

Tab to move between fields

Results

HAS-BLED Score

0/ 9

Annual Bleeding Risk

1.13%

High Bleeding Risk (≥3)0(0=No, 1=Yes)

How to Use This Calculator

Enter 0 or 1 for each HAS-BLED criterion: uncontrolled hypertension, abnormal renal/liver function, prior stroke, bleeding history, labile INR, elderly (> 65), and drugs/alcohol.
Review HAS-BLED Score — ≥ 3 indicates high bleeding risk requiring caution with anticoagulation.
Use to prompt modifiable risk factor correction, not to withhold anticoagulation when indicated.

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