TBI Calculator
Calculate the Glasgow Coma Scale (GCS) from eye, verbal and motor responses and review an educational traumatic brain injury severity category.
13–15
9–12
3–8
The GCS describes responsiveness at a point in time. Intubation, sedation, intoxication, language barriers and paralysis can limit interpretation.
Use this slider to compare category thresholds only.
It calculates the Glasgow Coma Scale by adding eye, verbal and motor response scores. The total ranges from 3 to 15.
A score of 13–15 is commonly grouped as mild, 9–12 as moderate and 3–8 as severe traumatic brain injury. Clinical assessment and imaging may change management.
No. A person can have a concussion or intracranial injury despite a high GCS. Worsening symptoms or emergency warning signs require urgent professional evaluation.
This educational calculator does not diagnose TBI, replace examination, imaging, emergency triage or clinician judgement. Call local emergency services immediately for loss of consciousness, repeated vomiting, seizure, worsening confusion, unequal pupils, weakness, fluid or blood from the ears or nose, severe worsening headache, or difficulty waking.
