StairDesigner – The Free Design Stair Calculator

Is free Stair Cad Software any good?

Is the demo version of StairDesigner a useful free stair design calculator?

What can you really do with the free demo version of StairDesigner?

You can download a free demo version of the StairDesigner stair software here.

But you are probably asking yourself so what?

– What can I do with the demo version of this stair software?
– Can I still draw stair plans?
– Is the demo version a valid stair design calculator?
– Can I get a perspective drawing of stairs?
– Can I use StairDesigner as a stair stringer calculator?
– Does StairDesigner show me how to draw stairs?
– And probably many more questions will pop to mind.

This series of articles is going to try and give you a clearer picture of the possibilities of the demo version of this stair cad software and the essential differences between the demo version and the full DXF version.

First of all the big advantage of the demo of this stair software version is it’s a free stair calculator.

The demo version will do just about everything the full version will do except print and export files for CAD/CAM. So you will be asking if I can’t print what good is it to me?

The StairDesigner demo version will do you some very useful work for you and for free!

For instance: You want to just calculate stairs. Say you want a straight flight 3m50 long and 800mm wide, for a floor to floor height of 2m60.

First set your working units.
Open the options “menu” then click “units”.
For our example choose your working units in mm.
Open the “File-New Stair- Multi flight winding” menu to open the “Stair Well Parameters” tool box.

staircase calculator swp

This stair calculator will do the maths for you.

For straight stairs just type in the length of the flight in the “Length” box.
For instance in our example 3500mm.
Then type in the width of the “landing step” (last step flush to the 1st floor) 100mm for our example.
Type in floor height, 2600mm in our example.
You’ll see that StairDesigner gives a default number of steps at 16 The tool box should look like this:

staircase calculator swp-01

Click “update” to calculate the stairs with your parameters.

StairDesigner gives “riser height” as 162.500, tread width as 226.667 and stair rule as 551.667.
The “OK” button is red to say that the stair doesn’t fit into the limits of control.
If you click on the “control” button you will see the control tool box that defines the limits of control.
To get the stairs designed within the control parameters click on the “help” button.
StairDesigner shows the actual parameters and suggests modifying the number of risers to 14.

You should see this:

staircase calculator swp-control

Click “OK”.

StairDesigner replaces 16 risers with 14 and the “OK” button is now green.

stair calculator

Click “OK”.

StairDesigner calculates the stairs and draws them giving all the information of height, rise, width etc..

stair stringer calculator

Click on the 3D button and StairDesigner shows the staircase in real 3D!

calculate stairs in 3D

This is just a short preview of how to draw stairs in the demo version. In the next post we will add newel posts and modify the handrails.

To see just how fast and easy stair design is with StairDesigner, watch this video!

Download the free demo version of StairDesigner to get started.


  • Sachin S

    Reply Reply March 14, 2010

    Hi, please send me free StairDesigner.

    • admin

      Reply Reply March 18, 2010

      Hi Sachin, To down load a version of StairDesigner just fill in the form on the right and you’ll get a download link.
      all the best,

  • vmrg70

    Reply Reply March 28, 2010

    i need download free version of stairdesigner.

    • admin

      Reply Reply March 29, 2010

      Hello vmrg70, you can down load a demo version using the subscribe box on the right.
      all the best , ness

  • babu

    Reply Reply March 29, 2010

    hai sir pls send me spiral stair calcultion software

  • MP Nepal

    Reply Reply January 11, 2011

    I want free stair design software

    • admin

      Reply Reply January 11, 2011

      Hello, To get the fre version you have to fill in the formular on the left and you will receive a download link.
      Have fun and a great new year.

  • Issam Baydoun

    Reply Reply April 5, 2011

    I need the free version oplease of spiral free StairDesigner version

    • admin

      Reply Reply April 5, 2011

      Hi Issam, Just fill in the formular on the right side bar and you’ll get the download link.

  • mahdi

    Reply Reply April 21, 2011


    • admin

      Reply Reply April 21, 2011

      Hello Mahdi, To get the demo version you have to fill in the form on the right hand side bar and you’ll be sent the down load link.
      All the best

  • Jim Shroff

    Reply Reply June 3, 2011

    When I completed the download…and clicked on HELP ==> ACTIVATE. The response I get is YOU DO NOT HAVE ADMINISTRATION RIGHTS.

    What should I do. Nobody else uses this computer of mine.

    • admin

      Reply Reply June 8, 2011

      Hi Jim,
      If you’re using Vista, to start StairDesigner click right on the icone and in the mouse menu “select run as adimistrator”
      This should solve your problem.

      Have fun

  • abuagla

    Reply Reply July 3, 2011

    thank so much for help me

  • abuagla babiker

    Reply Reply July 23, 2011

    please help me with this good software

    • admin

      Reply Reply July 24, 2011

      Hi Abuagla,

      To get going using StairDesigner I suggest you download and follow through the free tutorial that you can access from the “Free Downloads” page of this web site .
      Once you have understood the basics of how the program works download a stair template and try making it fit to your project. To understand how to use the output from the program for building a stair you should also download the How to use StairFile document.
      Hope this is helpful.
      all the best

  • joe

    Reply Reply August 19, 2011

    is it possible to draw a stairs and change dimensions and view in 3d without paying money if so could you tell me how as i am finding this very stressfull

    • admin

      Reply Reply August 20, 2011

      Hello Joe, The demo version is free and allows you to draw the stair and gives a 3D view. The only limitation is that you can’t get all the dimensions and you can’t print or export manufacturing files.
      The demo version does all the calculation of the stair just like the full version and you can capture the drawings and use them as a base to build your working drawings using free CAD software that is downloadable from the “Free Download” page of my web site.
      If you need the full working drawings in printable format you can use the StaiFile service on the “Stair Services” page.

      hope this is helpful.
      all the best

  • vijeth

    Reply Reply November 17, 2011

    plz send me a demo

    • admin

      Reply Reply November 17, 2011

      Hello Vijeht,
      To receive the demo version please fill in the form on the right side bar.
      If you have any problems email me.

      all the best

  • khaled moussalli

    Reply Reply December 5, 2011

    I live in Damascus Syria I would like to use this software to help my students in learning how to design a stair.

    • admin

      Reply Reply December 12, 2011

      Hello Khaled, The easiest way to use StairDesigner for your students would be to buy the educational version, please contact me directly for the prices. If you are short on finances you can just buy one full educational version and use the demo version to teach students.
      hope this is helpful.
      all the best

  • Jim

    Reply Reply April 2, 2012

    Hi, I am currently trying out the stair designer software. How can I save a 3D drawing of the staircase i have designed into a printable format?

  • admin

    Reply Reply April 6, 2012

    Hi Jim,
    To save and print the plans and 3D images from the demo version of StairDesigner you can use screen capture software like Fastone Capture.
    You can download a free version from the Free downloads page of this website.

  • Bob Stenson

    Reply Reply October 1, 2012

    Hi, I installed the software, went to help, and could not register because it said that I needed to be an administrator. Thanks.

    • admin

      Reply Reply October 2, 2012

      HI Bob,
      To use the software in demo version you don’t have to register just click demo mode in the activation window.
      If you can’t run the software, click right on the run icon and choose “run as administrator”.
      Hope this helps
      All the best

  • Mariappam

    Reply Reply October 19, 2013

    Please Help I need Stair Design Software Now i have used Demo Version

  • John

    Reply Reply November 4, 2013

    Where is the form on the right sidebar to download the software ???

    • admin

      Reply Reply November 4, 2013

      Hi John,
      If you can’t see the side bar form try using the form on the main page here:


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