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Centor Score for Streptococcal Pharyngitis Calculator

Likelihood of Group A Strep throat from 4 criteria.

Calculates the Centor score (tonsillar exudate, tender anterior lymph nodes, fever, absence of cough). Score 0–1: no antibiotics; score 2–3: consider throat culture; score 4: treat empirically.

Nadia Almasri By Nadia Almasri
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

Sum of 4 clinical criteria; score 0–4.

In depth

Calculates the Centor score (tonsillar exudate, tender anterior lymph nodes, fever, absence of cough). Score 0–1: no antibiotics; score 2–3: consider throat culture; score 4: treat empirically.