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Glasgow Coma Scale Calculator
Calculate a Glasgow Coma Scale score from eye, verbal, and motor components, with the component breakdown that matters more than the total.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Health & Fitness
Glasgow Coma Scale Calculator
Frontend preview — no upload or external service.
GCS result
E3 V4 M5 = 12. Recording the components matters: 12 could be E4V3M5 or E3V4M5, and those describe different patients.
How the Glasgow Coma Scale Calculator works
- Score each component on its best observed response.
- Record the components separately, not just the total — E and V and M carry different information.
- Note anything that prevents scoring a component, such as intubation or swelling, rather than guessing a value.
The method
The scale sums three independently scored components, with a minimum of 3 and a maximum of 15.
GCS = Eye (1-4) + Verbal (1-5) + Motor (1-6)
The same total can arise from very different component patterns, which is why the components are always recorded alongside it.
FAQ
Why record components rather than the total?
Because the total hides the pattern. E3V4M5 and E4V3M5 both total 12 and describe different presentations, and the motor component in particular carries the most prognostic weight.
What if a component cannot be scored?
Record it as untestable with the reason — intubation for verbal, severe facial swelling for eye opening. Substituting a guessed number makes the total misleading and the trend uninterpretable.
Is this a substitute for clinical assessment?
No. This is an educational calculator for a scoring instrument. Interpretation, trend monitoring, and any clinical decision belong to trained professionals assessing the patient directly.
How we compare
| Feature | Online Tool Store | A paper log | A subscription health app |
|---|---|---|---|
| Component breakdown recorded | ✓ | Sometimes | Yes |
| Handles untestable components | ✓ | ✗ | ✓ |
| Nothing stored | ✓ | ✓ | ✗ |
| Clinical decision support | ✗ | ✗ | ✓ |
Glasgow Coma Scale Calculator records the components alongside the total, because the same number describes very different patients.