A modelling tool that we think improves on the built-in Solver window; OpenSolver has been developed for Excel 2007/2010/2013/2016 (including the 64bit versions) running on Windows, and supports Excel for Mac 2011 on Mac OS X, with limited support for Excel for Mac 2016. If you're looking for a built-in add-in such as Solver or Analysis ToolPak, select the Tools menu and then select Add-ins. Get an Office Store add-in for Word or Excel for Mac. On the Insert menu, select Add-ins. Mac Users Using Excel 2016 or Excel Online. Get the new Solver App for Excel 2016 and Excel Online this free Solver app works equally well in desktop Excel 2016 and Excel Online – and handles the smallest to the largest, most challenging optimization models. Mac Users Using Excel 2016 or Excel Online. Get the new Solver App for Excel 2016 and Excel Online this free Solver app works equally well in desktop Excel 2016 and Excel Online – and handles the smallest to the largest, most challenging optimization models. Users can obtain Solver immediately from Microsoft AppSource.
Free Downloads
Watch this page for free downloads as they become available.
·DADM_Tools add-in: For various reasons, some users of our DADM and PMS books prefer not to use the Palisade add-ins discussed in these books. To provide another alternative, I created my own add-in called DADM_Tools that provides much of the basic functionality of the Palisade software. This add-in, written in Excel's VBA language, is not used in the books but it is available here for free. Because it is totally free, no support is available. However, it is very easy to use, and it is compatible with Excel for Windows and Excel for Mac. Here is a link to instructions: DADM_Tools Help.docx. Here is a link to the add-in: DADM_Tools.xlam.
·Random Functions Add-Ins: The DADM_Tools add-in mentioned in the previous bullet includes, among other things, a simulation program. For technical reasons, the custom functions I developed to generate random numbers from various probability distributions are not included in the DADM_Tools add-in.
oFor Windows users, the random functions are contained in a special type of add-in (an XLL that works only with Excel for Windows 2010 or higher). First read the following: RandGen Add-In.docx (updated 1/24/2019). Then install the add-in by running the Setup file in: RandGenSetup.zip.
oFor Mac users, the random functions are in the following add-in: Random Functions for the Mac.xlam.
·Excel tutorial: Here is the free version of my Excel tutorial: Excel Tutorial for Windows.xlsx. (It provides information for upgrading to a more complete version called ExcelNow!.) You can also download a version of the tutorial for the Mac: Excel Tutorial for the Mac.xlsx. By comparing these, you can see which features in Excel for Windows are not included in Excel for the Mac.
·Analysis ToolPak Guide: This is a supplement to our books for those of you who would like to use Excel's built-in Analysis ToolPak add-in, rather than StatTools, for statistical analysis. The zip file contains a pdf version of the guide and accompanying data files: Analysis ToolPak Guide.zip
·SolverTable Add-in: Each version below has a corresponding Help file (a Word file) that you should read before contacting me about problems. Each zip file below contains only two files: the .xla or .xlam add-in file and the Word help file. You should unzip both to the same folder (any folder of your choice) and then read the help file for more instructions. The next two bullets address some possible problems users have had.
oFor Solver that ships with Excel for Mac: SolverTable for Mac.zip
¨(Note: If you downloaded this zip before 10/30/2020, download this version instead. The previous version didn't recognize when a model has no feasible solutions. This version corrects the problem.) This version of SolverTable was created for the Mac in October 2020. The essence of SolverTable has always been that it makes multiple uninterrupted Solver runs. For technical reasons, this is not possible in Excel for Mac, which explains why a version of SolverTable had never been available for the Mac. However, this new version gets around the problem by making interrupted Solver runs. Before each run, you are prompted whether you want to make the next run. (This is explained more fully in the help file that is part of this zip file.) Admittedly, the interruptions slow down the process to some extent (besides the fact that Solver for the Mac is just plain slow), but it is much better than making multiple Solver runs manually, each with new input values. The good news is that the user interface and the results sheets are exactly the same as those for the Windows version of SolverTable.
oFor Solver that ships with Excel 2019 or Office 365: There is no 'new' SolverTable add-in for either of these. As far as I'm aware, SolverTable for Excel 2016 should work fine with either of these. I'm currently using it with Office 365 and haven't run into any problems.
oFor Solver that ships with Excel 2016: SolverTable 2016.zip
¨This version is basically the same as the 2013 version.
oFor Solver that ships with Excel 2013: SolverTable 2013.zip
¨This version wasn't created because SolverTable 2010 wouldn't work with Excel 2013. Rather, I made some technical changes in the software. Probably the main change is that this version now starts each Solver run from the original solution in the decision variable cells. (In previous versions, it started each Solver run from the previous Solver solution.)
¨Modified on 10/5/2015 to open the Help file in a simpler manner (less possibility of an error occurring).
oFor Solver that ships with Excel 2010:SolverTable 2010.zip
¨Modified on 10/5/2015 to open the Help file in a simpler manner (less possibility of an error occurring).
¨Modified on 4/26/2012 to fix a problem with long worksheet names. Basically, Excel allows worksheet names to be no longer than 31 characters. SolverTable creates a hidden sheet with its settings, and the name of the sheet is the model sheet name plus the suffix '_STS'. So if the name of your model sheet has from 28 to 31 characters, this would create an error. SolverTable now warns you before the error occurs.
¨Modified on 12/5/2011 to fix a potential sheet-naming problem.
¨Modified on 11/8/2011 to fix a potential problem where a user mistakenly selects the Simplex LP method on a nonlinear model. The previous code could get into an infinite loop in this case. A similar fix was made (see below) to the 2007 and 2003 versions. However, this 2010 version might not work correctly in 2007 or 2003 because of a subtle code change Frontline Systems made in its 2010 version of Solver.
¨Modified on 10/7/2010 to fix a bug that occurred when a user mistakenly ran SolverTable from an STS sheet (not a model sheet)
¨This version wasn't created because SolverTable 2010 wouldn't work with Excel 2013. Rather, I made some technical changes in the software. Probably the main change is that this version now starts each Solver run from the original solution in the decision variable cells. (In previous versions, it started each Solver run from the previous Solver solution.)
¨Modified on 10/5/2015 to open the Help file in a simpler manner (less possibility of an error occurring).
oFor Solver that ships with Excel 2010:SolverTable 2010.zip
¨Modified on 10/5/2015 to open the Help file in a simpler manner (less possibility of an error occurring).
¨Modified on 4/26/2012 to fix a problem with long worksheet names. Basically, Excel allows worksheet names to be no longer than 31 characters. SolverTable creates a hidden sheet with its settings, and the name of the sheet is the model sheet name plus the suffix '_STS'. So if the name of your model sheet has from 28 to 31 characters, this would create an error. SolverTable now warns you before the error occurs.
¨Modified on 12/5/2011 to fix a potential sheet-naming problem.
¨Modified on 11/8/2011 to fix a potential problem where a user mistakenly selects the Simplex LP method on a nonlinear model. The previous code could get into an infinite loop in this case. A similar fix was made (see below) to the 2007 and 2003 versions. However, this 2010 version might not work correctly in 2007 or 2003 because of a subtle code change Frontline Systems made in its 2010 version of Solver.
¨Modified on 10/7/2010 to fix a bug that occurred when a user mistakenly ran SolverTable from an STS sheet (not a model sheet)
¨Modified on 9/24/2010 to make it compatible with the GRG Nonlinear Multistart option
¨Modified on 9/3/2010 to be compatible with 64-bit Office 2010.
oFor Solver that ships with Excel 2007:SolverTable 2007.zip
¨Modified on 4/26/2012 – see point 2 above for the 2010 version
¨Modified on 12/5/2011 – see point 3 above for the 2010 version
¨Modified on 11/8/2011 – see point 4 above for the 2010 version
¨Modified on 10/7/2010 to fix a bug that occurred when a user mistakenly ran SolverTable from an STS sheet (not a model sheet)
oSolverTable fix: For those of you who have problems with SolverTable, here are instructions for a possible fix: Fixing SolverTable.docx.
oMissing Solver Reference: Here is another possible fix for SolverTable: Missing Solver Reference.docx
oSolverTable tip for international users: A user from outside the US discovered why his SolverTable wasn't working. The problem was in the numerical settings (decimal symbols and list separators), and the fix was to change these in Windows settings. I'm not sure how common this problem might be, but if you're outside the US and your SolverTable isn't working, this is worth a try.
oA strange SolverTable problem: Reynold Byers and his students at Arizona State discovered that in a straightforward integer-constrained model, SolverTable gave slightly suboptimal solutions. I originally thought this had to do with the Integer Optimality setting, but that wasn't it. They found that the decimal input being varied, something like from 0 to 0.6 in increments of 0.1, was not being set to exactly 0.4, say, but instead to something like 0.400025 – a slight roundoff – and this was enough to cause the suboptimal solutions. Great detective work on their part, but I'm not sure how to fix the problem. Anyway, be aware!
oAn interesting use of SolverTable: One way to use SolverTable is to let the Input cell(s) (for a one-way or two-way table) be the initial value(s) of decision variable cell(s). For a linear model, the only point in doing this would be to check that Solver indeed gets to the optimal solution regardless of the initial values. For a nonlinear model, this could be used to check whether there are local optima that Solver might get to, depending on the initial values it starts from. For example, for problem 7.48 of PMS 3e, which has exactly two decision variable cells, it is easy to show that Solver gets to the global optimum only for some initial values of the decision variable cells. (Thanks to Tom Schriber for this suggestion.)
It also allows users adjust pitch, bass, and treble, or normalize noise and add effects like reverb and phasing to the recordings. Audacity (Mac & Windows)As a well known open source audio recorder, Audacity is capable of recording and editing anything you throw at it, including audio through microphone and sound card all in a few clicks thanks to the clean interface. Audio record for mac.
·StatPro and StatBasics Add-Ins
Solver In Excel (Examples) | How To Use Solver Tool In Excel?
oStatPro for Excel 2007 and later: Although I no longer support StatPro, I tinker with it from time to time, and this version is the result: StatPro New.zip. It doesn't have all of the options from the original StatPro (stepwise regression is missing, e.g.), but it has some new features and a slightly different interface. It is contained in a single .xla file, and it does work with Excel 2007 and later versions. To load it, just double-click the .xla file.
oStatPro for the Mac: Some of you have requested a version of StatPro for the Mac, that is, for the Mac version of Excel. This was originally impossible because Excel 2008 didn't even have VBA, the programming language. That changed in Excel 2011, but the VBA interface is quite different from the one in Excel for Windows. Anyway, I gave it a shot, and you can try out this version: StatPro for Mac.zip. However, you're completely on your own; I provide no support for this version.
oStatBasics for Excel 2007: StatBasics for Excel 2007.zip. This is a mini version of StatPro I created (mostly to sharpen my programming skills). It provides only the basics: summary measures and useful statistical charts. Installation instructions are in the zip file. Try it out, but keep in mind that I do not provide support for it.
- NCAA March Madness simulation: Here is the simulation for 2019: March Madness 2019 with Data Table.xlsx. Also, here is a version that calculates the probability of a perfect bracket, i.e., successfully predicting the winner of each game: March Madness Probabilities 2013.xlsx. (I didn't update this file after 2013, but you can if you like. The probability of picking all winners will still be infinitesimally small.)
- Transient queueing analysis: Transient Queue.xlsm Did you know that you can analyze queues with time-varying behavior (e.g., arrival rates that increase during peak periods of the day) with spreadsheets, using analytical approximations, not simulation or steady-state analysis? This is indeed possible, as Wayne Winston has pointed out in the 4th edition of his Operations Research book. Although Wayne's approach is to use Excel formulas, this file uses a VBA program to perform the calculations. Enjoy!
- Automating Sudoku with VBA: Sudoku.xlsm (or Sudoku16.xlsm) If you love the laborious effort of working Sudoku puzzles—the pencil marks, the erasing, etc.—then you should not open these files. But if you want to see how powerful VBA programs can be, check it out the Sudoku.xlsm file. (You can check out the VBA code to see how it works.) And if you want to go a step farther, with 16x16 grids instead of the usual 9x9 grids, check out the Sudoku16.xlsm file. (Note: I changed these files slightly in April 2016. Specifically, the Sudoku.xlsm file now has an Algorithm sheet that walks you through the algorithm implemented in the VBA code. The VBA code is a bit hard to follow – a lot of nested loops – but the algorithm itself is quite straightforward.)
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Send e-mail to albright@indiana.edu
Albright and Winston are both retired from the Kelley School of Business, Indiana University, Bloomington.
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Solver In Excel 365
Updated: 10/30/2020
