Release Date



The Bifactor Indices Calculator is a Microsoft Excel-based tool for computing various statistical indices relevant to evaluating bifactor models including ECV, Omega, Omega_H, IECV, PUC, and others.

Digital Object Identifier (DOI)

Supporting Information

A user's guide is available on the first worksheet of the calculator.

File Format

Excel spreadsheet

File Size

473 KB


© 2017 David M. Dueber

The copyright holder has granted the permission for posting the calculator here.

Anyone can freely use and distribute the calculator for any purpose as long as they include the first worksheet (with the creator's information) in the file.


Dr. Michael Toland from the Department of Educational, School, and Counseling Psychology has approved the online availability of this calculator.

Recommended reference:

Dueber, D. M. (2017). Bifactor Indices Calculator: A Microsoft Excel-based tool to calculate various indices relevant to bifactor CFA models. [Also available at]