This page is for EDUCATIONAL USE ONLY - Do not use for direct patient care.

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Spirometry Reference Value Calculator

Data Entry Reference Source: Hankinson-1999 Knudson-1976 Gender: Male Female Race: Caucasian Black Hispanic Age: Height: in cm Optional - Enter Observed Values To Calculate Percent Predicted FVC (L): FEV1 (L): FEF25-75% (L/s):

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