Delux Stairs Construction calc 4+

Staircase stringer calculator


Designed for iPhone

    • 3.6 • 17 Ratings
    • $4.99

iPhone Screenshots


Easily create staircase stringers with only one measurement. Customize each component to suit your materials. Includes extensive help and printable plans and blueprints.

Create an ideal staircase with one simple measurement. Fine-tune the stairs to fit your space with an easy to use and understand, graphical interface.

Enter the total rise, and the app calculates total run (base length or overall run), pitch (angle or slope), unit run (goings or tread), unit rise (rise or step height), and all other measurements. You can then adjust the total run to fit your available space or preferred tread materials. A feature unique to Delux Stairs fine-tunes the stringer to accommodate for differences in flooring thicknesses such as the tread thickness and upper and lower finished flooring. This ensures every step is identical, which is the difference between clumsy, dangerous, amateur stairs and professional-quality, comfortable, code-compliant stairs. Additional stair details, such as nosing, riser thickness and stringer dimensions are also calculated and adjustable.

Blueprint plans can be directly printed or emailed in PDF which include platform position options, stringer peak positions, bottom step rise adjustments, top step run adjustments, and more.

The headroom clearance tool is also unique to Delux Stairs and not only shows you top floor opening requirements with adjustable floor thicknesses, but also continuous headroom obstruction clearance from the top to the bottom of the stairs.

◎ No ads, notifications, permission, subscriptions or in-app purchases.
◎ Direct visual graphic feedback for quick, easy to understand design.
◎ Diagrams & info screens make the sometimes cryptic terms clear.
◎ Email the finished blueprints to the client or to yourself.
◎ Print finished blueprints on any AirPrint-compatible printer.
◎ Takes flooring and tread thickness differences into account to ensure each step is identical to comply with building codes.
◎ Presets for Outdoor (decking), Indoor (plywood or hardwood) or Masonry (concrete) stairs.
◎ Perfect for open stringer and concrete designs & a great starting point for housed and box stairs.
◎ Headroom Clearance tool for determining top floor opening as well as continuous overhead obstruction clearance.
◎ High contrast, large text screens can be seen in bright sunlight at the job site.

Settings include:
- Imperial or Metric systems
- Specify Preferred Target Unit Run
- Specify Preferred Target Unit Rise
- Select point where inches > ft or mm > meters
- Customize Minimum Headroom

What’s New

Version 2.7.3

Added ability to directly print from in app.
Under the hood optimizations.
Updated layout to accommodate new phone models.
Fixed a bug that caused email functionality to fail if no email accounts were set up on the device.

Ratings and Reviews

3.6 out of 5
17 Ratings

17 Ratings

complete construction ,

The best

Love this app, however I wish you could view the plans in the app without e-mailing them! Dumb! I’d love to just print from the App.

Developer Response ,

Thank you, complete construction, for your purchase and review. We’ve now added the ability to print the plans directly from in-app to any AirPrint-compatible printer.

Abby Norml ,

Shares a common fault

All the stair calculators seem to share a common fault for layout of the stringers - they ASSUME the stringer stops one riser below the final elevation.
On the project I have, there is a tread AT the final elevation, so the stringer needs to be 4 risers high, not 3.
The only workaround I have found is to start estimating riser height, then add that to the final elevation. Then keep mucking around with the numbers until it all comes out correctly. Big PIA
It should be a simple addition to add a selection “Final Tread At Elevation”
Also - Online Help is a dead link. So NO online help & no instructions.

Developer Response ,

Thank you for purchasing Delux Stairs and providing this valuable feedback. The online help system was down for far too long; but it has now been fixed. We are looking into adding a "Final Tread At Elevation" feature for the next major release.

John Wayne Harper ,

Perfect for the job

I’m a carpenter mainly finish, facing a stair job and needing some help and direction. This app does all the hard stuff. It’s super clear, and WELL WORTH THE INVESTMENT if you need this type of information.


In short time I have the totals for all
The needed calculations and lengths to purchase and start cutting. Changes are easy to make and prints are emailed easily to an address.

👍👍Thank you!!
I’m no longer intimidated on the needs of my next project


Developer Response ,

hank you for the amazing review; and for purchasing the app. You could not have described our goals for Delux Stairs any better.

App Privacy

The developer, Delux, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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