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GOLD COPD Spirometry Grade Calculator

GOLD severity grade from post-bronchodilator FEV1 % predicted.

Classifies COPD severity using the GOLD classification based on post-bronchodilator FEV1 % predicted: GOLD 1 (≥80%), GOLD 2 (50–79%), GOLD 3 (30–49%), GOLD 4 (<30%).

Dr. Helena Ortiz 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

FEV1/FVC < 0.7 required; grade by FEV1% predicted.

In depth

Classifies COPD severity using the GOLD classification based on post-bronchodilator FEV1 % predicted: GOLD 1 (≥80%), GOLD 2 (50–79%), GOLD 3 (30–49%), GOLD 4 (<30%).