NEWS2 Score Calculator
Enter seven vital-sign parameters to get an instant NEWS2 aggregate score and clinical risk tier.
Vital Signs Input
Use Scale 2 only for confirmed hypercapnic respiratory failure (e.g., COPD CO2 retainer).
New confusion = any acute change in mentation, including delirium.
Enter vital signs and press Calculate to see the NEWS2 score and risk tier.
NEWS2 Aggregate Score
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out of 20
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Parameter Breakdown
| Parameter | Value | Score |
|---|
Red flag: one or more parameters scored 3. Escalate regardless of aggregate total.
Recommended Clinical Response
| Parameter | 3 | 2 | 1 | 0 | 1 | 2 | 3 |
|---|---|---|---|---|---|---|---|
| Resp. Rate (/min) | ≤8 | — | 9–11 | 12–20 | — | 21–24 | ≥25 |
| SpO2 Scale 1 (%) | ≤91 | 92–93 | 94–95 | ≥96 | — | — | — |
| SpO2 Scale 2 (%) | ≤83 | 84–85 | 86–87 | 88–92 (air) 93–94 (O2) | 93–94 (air) 95–96 (O2) | 95–96 (air) ≥97 (O2) | ≥97 (air) |
| Supplemental O2 | — | No | — | ||||
| Systolic BP (mmHg) | ≤90 | 91–100 | 101–110 | 111–219 | — | — | ≥220 |
| Pulse Rate (bpm) | ≤40 | — | 41–50 | 51–90 | 91–110 | 111–130 | ≥131 |
| Consciousness | — | — | — | Alert | — | — | C/V/P/U |
| Temperature (°C) | ≤35.0 | — | 35.1–36.0 | 36.1–38.0 | 38.1–39.0 | ≥39.1 | — |
Source: Royal College of Physicians. NEWS2 (National Early Warning Score 2). London: RCP, 2017. C/V/P/U = Confusion, Voice, Pain, Unresponsive.
Summary
Enter seven vital-sign parameters to get an instant NEWS2 aggregate score and clinical risk tier.
How it works
- Enter the patient's current respiratory rate (breaths per minute).
- Enter the SpO2 reading. Select Scale 2 if the patient has hypercapnic respiratory failure (COPD / known CO2 retainer); otherwise use Scale 1.
- Indicate whether the patient is on supplemental oxygen.
- Enter systolic blood pressure (mmHg), pulse rate (bpm), and temperature (°C).
- Select the ACVPU consciousness score: Alert, Confusion (new), Voice, Pain, or Unresponsive.
- The calculator scores each parameter per the NEWS2 table and sums to the aggregate score, then maps to a risk tier and recommended response.
Use cases
- Triage assessment at hospital admission or in the ED.
- Routine ward observations to catch deteriorating patients early.
- Ambulance and pre-hospital handover documentation.
- Teaching and revision for nursing and medical students.
- Audit and quality-improvement review of early-warning responses.
Frequently Asked Questions
Last updated: 2026-07-01 ·
Reviewed by Nham Vu