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StairCalculator is a dimension calculation tool for building structural steel and aluminum stairs. It provides imperial or metric dimensional calculations for steel stair stringers, including length, miter, and bevel cuts, running dimensions for tread holes in the web and running dimensions for handrail post holes in the flange. With a choice of three framing conditions at the top and bottom, bolted or welded treads, and stringer material from the AISC Shapes Database v15.0 November 2017 edition, StairCalculator can calculate dimensions for almost any stair stringer configuration. The calculator accepts negative dimensions for some inputs so you can move the stringer above or below the finished floor and above or below the nosing line giving StairCalculator the flexibility you need when drawing, checking, and fabricating steel and aluminum stairs.


Additional information

Published by

South Fork Technologies, Inc.


Copyright © 1999 - 2019 South Fork Technologies, Inc. ALL RIGHTS RESERVED

Developed by

Dennis Connelly at South Fork Technologies, Inc.

Release date


Approximate size

31.1 MB

Age rating

For all ages




Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.


The product developer believes this product meets accessibility requirements, making it easier for everyone to use.

Language supported

English (United States)

Additional terms

StairCalculator privacy policy
Terms of transaction
StairCalculator license terms
No other warranties: To the maximum extent permitted by applicable law, South Fork Technologies and its suppliers disclaim all other warranties, either express or implied, including, but not limited to, implied warranties of merchantability and fitness for a particular purpose, with regard to the software, and any accompanying hardware. This limited warranty gives you specific legal rights. You may have others, which vary from jurisdiction to jurisdiction. No liability for consequential damages: To the maximum extent permitted by applicable law, in no event and under no legal theory, tort, contract or otherwise, shall South Fork Technologies, its suppliers, or its resellers be liable for any special, incidental, indirect, or consequential damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, loss of goodwill, work stoppage, computer failure or malfunction, or any other pecuniary loss) arising out of the use of or inability to use the software, even if South Fork Technologies has been advised of the possibility of such damages. In no event will South Fork Technologies be liable for any damages in excess of the amount South Fork Technologies received from you for a license to the software. Because some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, the above limitation may not apply to you.

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