Glasgow Coma Scale (GCS) Calculator
Score eye opening, verbal response, and motor response — get the total GCS with severity classification in one tap. Designed for rapid neurological assessment at the bedside.
GCS scoring reference
| Component | Score | Response |
|---|---|---|
| Eye (E) | 4 | Spontaneous |
| Eye (E) | 3 | To voice |
| Eye (E) | 2 | To pain |
| Eye (E) | 1 | No response |
| Verbal (V) | 5 | Oriented |
| Verbal (V) | 4 | Confused |
| Verbal (V) | 3 | Inappropriate words |
| Verbal (V) | 2 | Incomprehensible sounds |
| Verbal (V) | 1 | No response |
| Motor (M) | 6 | Obeys commands |
| Motor (M) | 5 | Localizes pain |
| Motor (M) | 4 | Withdraws |
| Motor (M) | 3 | Abnormal flexion |
| Motor (M) | 2 | Extensor response |
| Motor (M) | 1 | No response |
Severity classification
| Total GCS | Severity |
|---|---|
| 13–15 | Mild |
| 9–12 | Moderate |
| 3–8 | Severe |
Frequently asked questions
What is the minimum and maximum GCS score?
GCS ranges from 3 (no response in any component) to 15 (fully alert and oriented). A score of 3 does not necessarily indicate brain death.
When is GCS used clinically?
GCS is used on initial assessment and serial monitoring for traumatic brain injury, altered mental status, post-resuscitation neuro checks, and intubation decision criteria (GCS ≤8 is a common threshold).
How do I score an intubated patient?
Document Verbal component as "T" (intubated/tube). Most scoring systems record this as 1T and note the limitation. The calculator allows manual entry for intubated patients.