Free tool
Glasgow Coma Scale (GCS) calculator
Score the best Eye, Verbal, and Motor responses for the Glasgow Coma Scale total, with the conventional E_V_M breakdown, the mild/moderate/severe band, and a non-testable verbal option for intubated patients. Published scale totals; bedside judgment unchanged. Scores are computed locally.
Pick the single best observed response in each column. The total is reported with its E_V_M breakdown beside it.
Glasgow Coma Scale
Pick a response in all three columns to see the total and its breakdown.
Published scale totals; bedside judgment unchanged. The Glasgow Coma Scale records a clinician's own bedside exam (best Eye, Verbal, and Motor responses); it measures level of consciousness. It does not interpret a cause, recommend imaging, set a disposition, or decide on airway, intubation, or transfer. Always report the E_V_M breakdown alongside the total: a single number hides which component is impaired. Severity bands and trauma-triage thresholds vary by protocol; verify against your current local / national guideline.
Privacy: Runs in your browser; scores are computed locally.
Response definitions and severity bands reproduced from: Jain S, Iverson LM. Glasgow Coma Scale. StatPearls [Internet]. NCBI Bookshelf NBK513298..
How the Glasgow Coma Scale is scored
The Glasgow Coma Scale measures level of consciousness as the sum of three best responses (Eye 1–4, Verbal 1–5, and Motor 1–6) for a total from 3 to 15. Convention is to report the breakdown, not just the sum (for example, "GCS 10 = E3 V4 M3"), because the same total can mean very different things. When the patient is intubated the verbal score is recorded as non-testable rather than guessed, and the total is reported as untestable.
A single number alone hides which component is impaired, so this tool always shows the E_V_M breakdown beside the total and the severity band. The response definitions and the bands come from the cited StatPearls reference, not from us; they measure level of consciousness and do not interpret a cause or set a disposition.
Many clinics still record the GCS by hand. If you run a neurology practice, our neurology clinic workflow page explains how Avinya Plus's template builder and formula engine let you build the Eye/Verbal/Motor responses into a clinical note, total them automatically, and keep the E_V_M breakdown on the record. Avinya Plus ships no pre-built GCS instrument: you configure it; the arithmetic is the engine's.
Frequently asked questions
- How is the Glasgow Coma Scale calculated?
- It is the sum of three best responses: Eye opening (1–4), Verbal response (1–5), and Motor response (1–6), giving a total from 3 to 15. Each component is scored at the single best response observed.
- What do the GCS severity bands mean?
- By convention, a total of 13–15 is mild, 9–12 is moderate, and 3–8 is severe brain injury, with 8 or below the usual coma threshold. Bands and trauma-triage thresholds vary by protocol.
- Why report E, V, and M separately?
- Because a single total hides which component is impaired. For example, GCS 10 could be E3 V4 M3 or a very different combination. The conventional report is the breakdown alongside the total, which this tool always shows.
- What if the patient is intubated?
- The verbal response is recorded as non-testable rather than guessed, and the total is reported as untestable. The tool does not fabricate a verbal score.
- Do GCS component scores leave the browser?
- No. Eye, verbal, and motor picks stay local. Print for a clean worksheet.
Sources
The Eye/Verbal/Motor response definitions and the mild/moderate/severe bands are reproduced from StatPearls (NBK513298). The GCS measures level of consciousness; it is not a diagnosis, and trauma-triage thresholds vary by protocol. Always report the E_V_M breakdown with the total. Reviewed against the source on 2026-06-29. Verify against the current local / national guideline.
Keep the GCS in the record, with its breakdown.
In Avinya Plus you can build the Eye/Verbal/Motor responses into a clinical template, total them automatically, and keep the E_V_M breakdown on the note. See it configured on a quick demo.