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HAS-BLED Score Calculator

Annual major-bleeding risk on anticoagulation.

Compute the HAS-BLED score, a 9-item risk index for major bleeding in patients with atrial fibrillation on anticoagulation. Each yes scores 1 point.

Priya Venkatesan By Priya Venkatesan
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Hypertension + Abnormal renal/liver (1 each) + Stroke + Bleeding history + Labile INR + Elderly (>65) + Drugs + Alcohol (1 each).

In depth

Compute the HAS-BLED score, a 9-item risk index for major bleeding in patients with atrial fibrillation on anticoagulation. Each yes scores 1 point.