What is Glasgow Coma Scale (GCS) Calculator?

Score level of consciousness with the Glasgow Coma Scale (GCS) from eye, verbal and motor responses (3–15).

How is Glasgow Coma Scale (GCS) Calculator calculated? What is the core formula?

GCS = Eye(1–4) + Verbal(1–5) + Motor(1–6). Severity: ≤ 8 severe, 9–12 moderate, 13–15 mild. Score best Eye (1–4), Verbal (1–5) and Motor (1–6) responses; always document the EVM breakdown.

What are the key clinical points for Glasgow Coma Scale (GCS) Calculator?

Always report components (e.g. E3V4M5), not just the total. Score the best response; if intubated, verbal = 1T. GCS ≤ 8 — consider a definitive airway.

What are the limits and cautions when using Glasgow Coma Scale (GCS) Calculator?

If intubated, score verbal as 1T and note it explicitly. Interpret with pupils and focal neurology — GCS alone is incomplete. Score the best response; sedatives and language barriers confound verbal. 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.

Does Glasgow Coma Scale (GCS) Calculator upload patient data? Where is it calculated?

Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.

How is Glasgow Coma Scale (GCS) Calculator calculated in practice? Can you show a worked example?

Inputs: Eye opening 3 To speech, Verbal response 3 Inappropriate words, Motor response 4 Withdraws → Result: GCS 10 /15（Breakdown: E3 V3 M4, Severity: Moderate brain injury, Airway: Monitor; reassess for change.） Inputs: Eye opening 4 Spontaneous, Verbal response 5 Oriented, Motor response 6 Obeys commands → Result: GCS 15 /15（Breakdown: E4 V5 M6, Severity: Mild brain injury, Airway: Monitor; reassess for change.）

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🧠 Glasgow Coma Scale (GCS) Calculator

UseAssess and trend consciousness in trauma, stroke and the critically ill. Record the EVM components.

Loading calculator…

Strata13–15 mild, 9–12 moderate, ≤ 8 severe/coma (often needs airway protection).

LimitsIf intubated, score verbal as 1T and note it explicitly. · Interpret with pupils and focal neurology — GCS alone is incomplete. · Score the best response; sedatives and language barriers confound ver…

SourceTeasdale G, Jennett B. Lancet 1974

Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.

Stored on this device for revisit reminders

This-shift next steps

After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.

Scene next step

📋Seizure / consciousnessOpen scene pack →

Related scores

Matching pathway

🧭status_epiOpen pathway →

Score + version; reference only — not a substitute for care · no HIS write

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Methodology · worked example, guidelines & full notes

Clinical takeaway

Always report components (e.g. E3V4M5), not just the total.

When to use

Assess and trend consciousness in trauma, stroke and the critically ill. Record the EVM components.

How it works

GCS = Eye(1–4) + Verbal(1–5) + Motor(1–6). Severity: ≤ 8 severe, 9–12 moderate, 13–15 mild.

Key points

Always report components (e.g. E3V4M5), not just the total.
Score the best response; if intubated, verbal = 1T.
GCS ≤ 8 — consider a definitive airway.

References

Teasdale G, Jennett B. Lancet 1974

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.

Eye opening	3 To speech
Verbal response	3 Inappropriate words
Motor response	4 Withdraws

→GCS10/15

Breakdown：E3 V3 M4
Severity：Moderate brain injury
Airway：Monitor; reassess for change.

Eye opening	4 Spontaneous
Verbal response	5 Oriented
Motor response	6 Obeys commands

→GCS15/15

Breakdown：E4 V5 M6
Severity：Mild brain injury
Airway：Monitor; reassess for change.

Verification & sources · governance

Four-layer sources

Verified: 2026-09-25 · Result not structured

Algorithm / derivation
Teasdale G, Jennett B. Assessment of coma and impaired consciousness. A practical scale. Lancet 1974;2:81-84. doi:10.1016/S0140-6736(74)91639-0 — Eye 1–4 + Verbal 1–5 + Motor 1–6; total 3–15; record as E/V/M (e.g. E3V4M5).
Guideline / society
No single society 'GCS guideline' replaces the original scale. Structured E/V/M reporting: Teasdale G, et al. The Glasgow Coma Scale at 40 years. Lancet Neurol 2014;13:844-854. doi:10.1016/S1474-4422(14)70120-6
Implementation
Score best eye, verbal, and motor responses; if intubated, record V as T and note it. Bands 13–15 / 9–12 / ≤8 are severity cues, not sole airway decisions.

Can do

Compute GCS (3–15) and record E/V/M components
Describe consciousness severity with 13–15 / 9–12 / ≤8 bands

Cannot do

Decide intubation or surgery from the total alone
Force a verbal score when intubated without marking T

Classic Teasdale/Jennett E+V+M scoring.

Formula changelog

1974 — GCS published (Teasdale & Jennett / Lancet)
2014 — 40-year review on structured reporting (Lancet Neurol)
2026-09-25 — Source update: verifiable link added for Teasdale & Jennett 1974 (Lancet) + Teasdale 2014 "The Glasgow Coma Scale at 40 years" (Lancet Neurol); formula unchanged.

FAQ

Frequently asked questions

Does Glasgow Coma Scale (GCS) Calculator upload patient data? Where is it calculated?: Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
How is Glasgow Coma Scale (GCS) Calculator calculated in practice? Can you show a worked example?: Inputs: Eye opening 3 To speech, Verbal response 3 Inappropriate words, Motor response 4 Withdraws → Result: GCS 10 /15（Breakdown: E3 V3 M4, Severity: Moderate brain injury, Airway: Monitor; reassess for change.） Inputs: Eye opening 4 Spontaneous, Verbal response 5 Oriented, Motor response 6 Obeys commands → Result: GCS 15 /15（Breakdown: E4 V5 M6, Severity: Mild brain injury, Airway: Monitor; reassess for change.）

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