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Calculate the Glasgow Coma Scale (GCS) from the three response components: Eye Opening (E, 1–4), Verbal Response (V, 1–5), and Motor Response (M, 1–6). Total = E + V + M, range 3–15. Supports the '1t' notation for intubated/untestable verbal response (counted as V = 1, with an annotation, and recommends reporting the E_M_V component string). Severity bands: 13–15 mild, 9–12 moderate, 3–8 severe (severe scores commonly prompt airway protection). Derived from Teasdale & Jennett, Lancet 1974, with the Lancet Neurology 2014 review and 2024 update. Not medical advice.
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Tool usage guide
The Glasgow Coma Scale (GCS) Calculator adds Eye Opening (E), Verbal Response (V), and Motor Response (M) scores to produce a total from 3 to 15, with mild, moderate, and severe severity bands. It also supports the 1t notation for an intubated or untestable verbal response. This tool is not medical advice.
Background
The patient opens their eyes spontaneously, is oriented, and obeys commands.
Problem
Calculate the total GCS and identify its severity band.
How to use
Select Spontaneous for Eye Opening, Oriented for Verbal Response, and Obeys commands for Motor Response.
Outcome
The calculator returns E4_V5_M6 = 15, classified as Mild (13–15).
Background
The patient opens their eyes to pressure, is intubated and cannot be tested verbally, and shows normal flexion or withdrawal.
Problem
Calculate the score while preserving the intubation notation in the component report.
How to use
Select To pressure for Eye Opening, Intubated / untestable for Verbal Response, and Normal flexion (withdrawal) for Motor Response.
Outcome
The calculator returns E2_V1t_M4 = 7, with V counted as 1 and the result classified as Severe (3–8).
The GCS measures consciousness using eye opening, verbal response, and motor response scores.
The total ranges from 3 to 15.
Add the Eye Opening, Verbal Response, and Motor Response values: GCS = E + V + M.
Choose 1t for an intubated or untestable verbal response. It counts as V = 1 and is annotated in the result.
Scores of 13–15 are mild, 9–12 are moderate, and 3–8 are severe. The result does not replace clinical assessment.