The GCS was introduced in Glasgow in 1974 and is the most widely used scale for consciousness worldwide. Always report the components (for example E3 V4 M6) as well as the total. A GCS of 8 or less usually means the airway needs protecting.
How to use the Glasgow Coma Scale Calculator
- Eye opening
- Verbal response
- Motor response
Results update as you type, and every field accepts the units shown in its menu.
How it works
Each answer carries the points shown in the published score. The calculator adds them up and maps the total to the published interpretation.
Scoring table
| Item | Answers and points |
|---|---|
| Eye opening | Spontaneous (4) = 4; To sound (3) = 3; To pressure (2) = 2; None (1) = 1 |
| Verbal response | Oriented (5) = 5; Confused (4) = 4; Words (3) = 3; Sounds (2) = 2; None (1) = 1 |
| Motor response | Obeys commands (6) = 6; Localising (5) = 5; Normal flexion (4) = 4; Abnormal flexion (3) = 3; Extension (2) = 2; None (1) = 1 |
Inputs explained
| Field | What to enter |
|---|---|
| Eye opening | Choose one: Spontaneous (4), To sound (3), To pressure (2), None (1) |
| Verbal response | Choose one: Oriented (5), Confused (4), Words (3), Sounds (2) … |
| Motor response | Choose one: Obeys commands (6), Localising (5), Normal flexion (4), Abnormal flexion (3) … |
Health note: this calculator is for education and screening only and is not a diagnosis or treatment advice. Discuss your results with a qualified clinician.
Formula
Score = sum of the points for each item
Worked example
Inputs — Eye opening: Spontaneous (4); Verbal response: Oriented (5); Motor response: Obeys commands (6).
Results — GCS = 15 / 15; Severity = Mild (13–15).
Key terms
- GCS
- Glasgow Coma Scale.
Frequently asked questions
What is a normal GCS?
15.
What does GCS 8 mean?
Severe impairment; "GCS 8, intubate" is a common rule of thumb for airway protection.
How is GCS scored if the patient is intubated?
Verbal is recorded as "T" (not testable) and reported separately.