Spirometry Reference Value Calculator

Reference Value Calculator

Enter Age, Height, Gender and Race. To see Percent Prediced, you must enter observed FVC, FEV1, and FEF25-75% values in the appropriate boxes. Click Calculate to calculate the predicted values.

Reference Source:Gender:

Race:

Age:

Height:

Optional Observed Values Below – Enter to calculate Percent Predicted
FVC (L):
FEV1 (L):
FEF25-75% (L/s):
FEV1/FVC%:

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

Disclaimer: This calculator is intended for use with the NIOSH Spirometry Workbook exercises and has NOT been approved by the FDA for clinical use.

Page last reviewed: December 22, 2011

Content source: National Institute for Occupational Safety and Health

Spirometry Reference Value Calculator

Reference Value Calculator

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