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[Exce-Lint logo]

Exce-Lint is an Excel add-in that automatically finds formula errors in spreadsheets. It is a product of research from the PLASMA lab @ UMass Amherst and Microsoft Research.

by Dan Barowy (Williams College), Emery Berger (UMass Amherst / Microsoft Research), and Ben Zorn (Microsoft Research).


Exce-Lint works as an add-in for all modern versions of Excel, including Mac, Windows, and online. You need to install the file manifest.xml following the appropriate instructions for each platform:

Source code

Source code for the add-in may be found at its GitHub repository.


The Exce-Lint add-in does not collect personally identifiable information. See the privacy statement for more details.


Exce-Lint is provided without any guarantee of support. However, we welcome bug reports and enhancement/feature requests.

Technical Details

The following technical paper describes how ExceLint works and includes an extensive empirical evaluation: ExceLint: Automatically Finding Spreadsheet Formula Errors, Daniel W. Barowy (Williams College), Emery D. Berger (University of Massachusetts Amherst), Benjamin Zorn (Microsoft Research). In Proceedings of the ACM on Programming Languages, Volume 2, Number OOPSLA.


This material is based upon work supported by the National Science Foundation under Grant No. CCF-1617892. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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