3D-Calc Spreadsheet


3D-Calc is a 3-dimensional spreadsheet program for the Atari ST computer (Atari Corp.). This computer is based on the Motorola 68000 processor and uses GEM as operating system (Graphical Environment Manager). 3D-Calc is written in Modula-2.

The first version of the program was released in April 1989 and was distributed by ISTARI bvba, Ghent, Belgium. The spreadsheet was 3-dimensional since it contained 13 pages of 2048 rows and 256 columns. Cells of different pages could be cross-referenced.

Starting May 1991, the English version is distributed by Microdeal-Michtron, Cornwall, UK.

In January 1992, version 2.3 of the program was licensed to Atari Corp., who released Dutch and French translations.

In 1994, version 3 of 3D-Calc (renamed 3D-Calc+) was licensed to the U.K. magazine ST Applications.

The main features of the program are:

  • 3 dimensional: 13 pages x 2048 rows x 256 columns;
  • 3 spreadsheets simultaneously in memory; 3 windows can be open per spreadsheet;
  • integrated text module, with data export from the spreadsheet allowing formatted data output, mailmerge, label printing etc.;
  • integrated 3D-Calc programming language;
  • graphical module includes: bar and line diagrams, pie chart, multiple bar and line graphs, stacked bar graphs, function graph, etc.;
  • enhanced statistical analysis including: averages and distribution parameters, scatter diagram with best fitting curve, regression and correlation, t-tests, Wilcoxon tests, etc.;
  • extended database functions;
  • includes 3D-Calc spreadsheet accessory and text accessory;
  • easy to use intuitive GEM-interface;
  • reads Lotus 1-2-3 files.

Today, 3D-Calc is in the public domain and can be downloaded freely.


Review (PDF, 750 KB) published in ST Applications, October 1994.
Images Some pictures illustrating the software.
Download Download the program files and complete manual.


Get in touch when you have any comments and/or suggestions.

Frank Schoonjans