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NIHSS Total Calculator

Sum of the 11 NIH Stroke Scale items.

Sum the eleven NIH Stroke Scale items into the total NIHSS score and assign a severity band: 0 no stroke; 1–4 minor; 5–15 moderate; 16–20 moderate-to-severe; 21+ severe.

Priya Venkatesan By Priya Venkatesan
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Total = sum of 11 items. Severity bands: 0 / 1-4 / 5-15 / 16-20 / 21+.

In depth

Sum the eleven NIH Stroke Scale items into the total NIHSS score and assign a severity band: 0 no stroke; 1–4 minor; 5–15 moderate; 16–20 moderate-to-severe; 21+ severe.