Glasgow Coma Scale (GCS)
Standard scale for level of consciousness.
What is Glasgow Coma Scale (GCS)?
Standard scale for level of consciousness. Glasgow Coma Scale is intended for use in: Adults.
How to Use the Glasgow Coma Scale Calculator
- Enter Eye opening (E).
- Enter Verbal response (V).
- Enter Motor response (M).
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- Cannot be fully scored in intubated patients (verbal component) — often reported with a 'T' suffix in that setting.
References
- Teasdale G, Jennett B, Lancet 1974;2:81-84
Frequently Asked Questions
What is Glasgow Coma Scale (GCS)?
Standard scale for level of consciousness.
Who is Glasgow Coma Scale intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of Glasgow Coma Scale?
Cannot be fully scored in intubated patients (verbal component) — often reported with a 'T' suffix in that setting.
What formula or reference does Glasgow Coma Scale use?
Teasdale G, Jennett B, Lancet 1974;2:81-84
Is Glasgow Coma Scale a diagnosis?
No. Glasgow Coma Scale produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.