qSOFA Score Calculator — free guideline decision tool
Calculate the quick SOFA (qSOFA) score to flag patients with suspected infection at risk of poor outcomes.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Respiratory rate ≥ 22/min | No |
|---|---|
| Altered mentation (GCS < 15) | No |
| Systolic BP ≤ 100 mmHg | No |
→qSOFA0/3
- Interpretation：< 2: lower risk (does not rule out sepsis).
| Respiratory rate ≥ 22/min | Yes |
|---|---|
| Altered mentation (GCS < 15) | Yes |
| Systolic BP ≤ 100 mmHg | Yes |
→qSOFA3/3
- Interpretation：≥ 2: higher risk of mortality / prolonged ICU stay.
Common questions
What is qSOFA Score Calculator?
Calculate the quick SOFA (qSOFA) score to flag patients with suspected infection at risk of poor outcomes.
How is qSOFA Score Calculator calculated? What is the core formula?
1 point each: respiratory rate ≥ 22, altered mentation (GCS < 15), systolic BP ≤ 100. ≥ 2 = higher risk.
When is qSOFA Score Calculator used?
Rapid bedside screen in suspected sepsis outside the ICU.
What are the key clinical points for qSOFA Score Calculator?
qSOFA ≥ 2 warrants escalation and assessment for organ dysfunction. A score < 2 does not exclude sepsis. It is a prompt, not a diagnosis.
What are the limits and cautions when using qSOFA Score Calculator?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is qSOFA Score Calculator calculated in practice? Can you show a worked example?
Inputs: Respiratory rate ≥ 22/min No, Altered mentation (GCS < 15) No, Systolic BP ≤ 100 mmHg No → Result: qSOFA 0 /3（Interpretation: < 2: lower risk (does not rule out sepsis).） Inputs: Respiratory rate ≥ 22/min Yes, Altered mentation (GCS < 15) Yes, Systolic BP ≤ 100 mmHg Yes → Result: qSOFA 3 /3（Interpretation: ≥ 2: higher risk of mortality / prolonged ICU stay.）
Run qSOFA Score Calculator now
Calculate the quick SOFA (qSOFA) score to flag patients with suspected infection at risk of poor outcomes.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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