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Calcimator

Glasgow Coma Scale Calculator

Calculate the Glasgow Coma Scale (GCS) score from eye, verbal, and motor responses for assessing consciousness level.

Inputs

GCS total 13–15 = mild TBI; 9–12 = moderate; ≤8 = severe TBI (intubation threshold)

GCS ≤8: severe TBI, consider intubation; score 3 (minimum) = deeply comatose

Motor score ≤2 (extension/no response) indicates severe neurological injury

Results

Total GCS Score

15/ 15

Eye Component4/ 4
Verbal Component5/ 5
Motor Component6/ 6
Severity1(1=Mild, 2=Moderate, 3=Severe)
Intubation Indicated (GCS ≤ 8)0(0=No, 1=Yes)
How to Use This Calculator
  1. Score Eye Opening Response (1–4), Verbal Response (1–5), and Motor Response (1–6).
  2. Review Total GCS Score (3–15) — 13–15 is mild, 9–12 is moderate, ≤ 8 is severe TBI.
  3. GCS ≤ 8 typically warrants airway protection.

How the result changes with Motor Response

Motor ResponseTotal GCS Score
1.511/ 15
2.7512/ 15
4.2513/ 15
5.515/ 15

What each input means

Eye Opening Response
Eye opening response per Glasgow Coma Scale (Teasdale & Jennett, 1974). 1 = No response, 2 = To pressure (pain), 3 = To voice (command), 4 = Spontaneous.
Verbal Response
Verbal response per GCS. 1 = No response, 2 = Incomprehensible sounds (moans/groans), 3 = Inappropriate words (random speech), 4 = Confused (disoriented conversation), 5 = Oriented (correct person/place/time).
Motor Response
Motor response per GCS. 1 = No response, 2 = Extension (decerebrate), 3 = Abnormal flexion (decorticate), 4 = Withdrawal (pain), 5 = Localizing (purposeful), 6 = Obeys commands.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Eye Opening Response = 4, Verbal Response = 5, Motor Response = 6 = 3 input(s) provided
  2. Calculate Total GCS Score
    Total GCS Score
    15 = 15
  3. Calculate Eye Component
    4 = 4
  4. Calculate Verbal Component
    5 = 5

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