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. A scoring aid, not a diagnosis, and nothing you enter leaves your device.
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.
Scoring aid, not a diagnosis. 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 entirely in your browser — nothing you enter is sent to a server or stored.
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.
- Does any of the data I enter leave my browser?
- No. The scoring runs entirely in your browser; nothing you enter is sent to a server or stored. The print option produces a clean worksheet you can save as a PDF.
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.