Glasgow Coma Scale (GCS) Calculator

Calculate GCS score from eye, verbal, and motor responses. Assess level of consciousness.

Eye opening (E)

Verbal response (V)

Motor response (M)

Please check your inputs and try again.

Worked Examples

Example 1: Confused patient: E4, V4, M6

4+4+6

Result: GCS 14/15 — Mild

CT per clinical judgment

Example 2: Unresponsive: E1, V1, M2

1+1+2

Result: GCS 4/15 — Severe

Immediate intubation and CT head

Frequently Asked Questions

What GCS requires intubation?

GCS ≤8 is the classic threshold: 'GCS 8, intubate.' However, clinical judgment prevails — a rapidly deteriorating patient at GCS 12 may need intubation, while a stable GCS 7 post-seizure may not.

GCS limitations?

GCS cannot be applied normally to intubated patients (no verbal score), under sedation, or with facial trauma. Modified GCS and the FOUR Score were developed to address these limitations.