This page is for EDUCATIONAL USE ONLY - Do not use for direct patient care.
Spirometry Reference Value Calculator
Data Entry
Reference Source:
Gender: Race: Age: Height:

Optional - Enter Observed Values To Calculate Percent Predicted
FVC (L): FEV1 (L): FEF25-75% (L/s):
Calculated Values
FVC (L)* FEV1 (L)* FEV1/FVC% FEF25-75% (L/s)*
Percent Predicted
Lower Limit of Normal