Calculate Dimensions of Stairs
This calculator, provided by Decks.com & our client Trex© determines many aspects needed to design & install stairs.
This calculator will tell you:
- > How Many Rises You’ll Need
- > Dimensions for each rise
- > Total run and rise
- > Step run (tread depth)
- > Step rise (riser height)
- > Bottom step rise
- > Angle of your staircase
- > Stringer length
Also see this article on how to build stairs after using the tool.


NOTE: This is an external calculator link – The link above is provided as a directory service only.
Use of the tool is at your own risk & is not affiliated in any way with Engineering Express.
We have no interest, receive no commissions, nor have any relationship with the destination website.
This tool is provided as a public service only.
Results are for estimation purposes only and are to be reviewed by a design professional before use.