Is the Glasgow Coma Scale Calculator free?
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
Is my data uploaded?
No. Everything runs locally in your browser, so your details never leave your device and the tool works offline.
How is the GCS scored?
Add the best eye response (1-4), verbal response (1-5) and motor response (1-6). The total runs from 3 (no response) to 15 (fully alert). It is recorded as E, V and M, for example E2 V2 M4 = 8.
What do the severity bands mean?
By convention 13-15 is mild, 9-12 moderate and 8 or less severe brain injury. A GCS of 8 or less is the classic threshold for protecting the airway. This page is a scoring aid for training and documentation, not a substitute for clinical assessment.