NIHSS Calculator Online

NIHSS (National Institutes of Health Stroke Scale): 15 items assessed at the bedside, score 0-42. The higher the score, the greater the neurological deficit. Used to grade acute ischemic stroke severity, guide reperfusion decisions and track evolution (Brott et al., Stroke. 1989).

Medical notice: Reference and organization tool for healthcare professionals. This is NOT a medical device, does NOT provide a diagnosis, and does NOT replace clinical judgment or current institutional guidelines. The professional using this calculator is responsible for validating every result against current evidence and regulations before applying it to a real patient. Free tool by CESCAC Productos y Servicios S.A.S. (RUC 0993389404001, Ecuador).

1a. Level of consciousness

1b. LOC questions (month and age)

1c. LOC commands (open/close eyes, grip hand)

2. Best gaze

3. Visual fields

4. Facial palsy

5a. Motor arm, left

Not testable (amputation/joint fusion)

5b. Motor arm, right

Not testable (amputation/joint fusion)

6a. Motor leg, left

Not testable (amputation/joint fusion)

6b. Motor leg, right

Not testable (amputation/joint fusion)

7. Limb ataxia

8. Sensory

9. Best language (aphasia)

10. Dysarthria

Not testable (intubated or other physical barrier)

11. Extinction and inattention

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Need the full offline reference? Full 19-score reference PDF. Want the top 5 on one printable page? Free ICU Quick Card by email -- qSOFA, NEWS2, CURB-65, GCS, Wells PE.