Isoplot is BGC’s Visual Basic Add-in for Microsoft’s Excel ® for data analysis and graphical presentation of geochronology, earth science and other radiogenic isotope data only.
BGC’s Isoplot is not the Isoplot® for analysis of any measuring system as described at http://www.shainin.com/. BGC is not affiliated with Red X® Holdings, LLC. Isoplot® is a registered trademark of Red X® Holdings, and is licensed to Shainin ® LLC.




Isoplot 3.7 and 4.1

Isoplot is a flexible tool for the mathematical and graphical interpretation of radiogenic-isotope data, especially as applied to geochronology.

Isoplot 3.7 and Isoplot 4.1 are “Add-In” programs that run only under Windows Excel versions 2003 and earlier (Isoplot 3.7), or only under Excel versions 2007 and 2010 (Isoplot 4.1). No versions of Isoplot can be run as a stand-alone program.

Isoplot 3 is not compatible with either Excel 2007 or Excel 2010. If you must use Excel 2007 or Excel 2010, request a copy Isoplot 4, which is compatible with Excel 2007/2010 only. Isoplot 4 has no more functionality than Isoplot 3.7, and somewhat less flexibility. Expect a speed penalty of up to a factor of 10 when using Excel 2007/2010.

There are no versions of Isoplot compatible with native Macintosh versions of Excel, including Excel 2011. To run Isoplot on the Macintosh, you will need to acquire a Windows-enabling program (Fusion will work, but not Crossover nor Parallels). Despite expectations on my part, Excel 2011 is not Isoplot-compatible


Isoplot can:

Isoplot is available without charge.


Files for Downloading

arrow Isoplot3.75manual.pdf

arrow Isoplot ReadMe.pdf

arrow Isoplot3.75 files.zip (contains all of the above files plus the add-in itself)

arrow Isoplot4.15 files.zip