StairCalc - Stair Calculator 4+

Stairs, Decking & Flooring


    • 5.0 • 1 Rating
    • $6.99



Stair Calculator, Decking Estimator, SetOut & Concrete Calculator.
Set restrictions to remain within building guidelines.
Used by carpenters in the USA & 20+ countries.

Stair framing, decking, flooring and concrete calculator.
StairCalc is designed for carpenters, contractors and builders who need accurate stair, decking & flooring calculations.

No need to remember complex data entry steps in order to enter data - start entering in any field. 
Double tap on buttons for help and guides.

Simultaneously find solutions when restrictions on tread, step rise, incline and '2R+G'/'2R+TD' are required.
Select to apply some all or none of the restrictions depending on your situation.
NOTE: Those pre-filled are not to be relied upon as Building Regulations vary greatly within countries and regions within those countries.
Please check your local regulations and amend as required.

Accurate and reliable, it is an indispensable tool for the stair framing, decking & flooring construction pro.
Developed by carpenters and used by contractors and builders around the world.

Metric or US/Imperial (feet, inches - decimal or fractions) tap icon to change.

Also includes a general calculator simplified for construction calculations including a tape which can be emailed.

STAIR FRAMING (currently for single stair runs):-
In addition to handling multiple restrictions simultaneously Staircalc also allows for situations where the overall stair rise is fixed or the stair run is fixed or both rise and run are fixed allowing maximum flexibility.
◆ Number and size of step risers,
◆ Number and size of treads, step inclines,
◆ Step incline,
◆ Stairwell opening,

◆ Options for Insets, single or double bearers
◆ Set Spacing type to maximum, fixed or equal
◆ Set pricing for materials / labour to calculate cost and cost/area
◆ Print, email or message lists and even makes notes on first

Calculate and print list of stout positions.
◆ Equally spaced, maximum spacing or fixed spacing options;
◆ Insets at start and end.
◆ Lists of set out positions;
◆ Print, email or message lists and even makes notes on first;

◆ Concrete Calculator/Estimator for Slabs, footings, round and rectangular/square holes
◆ Calculate quantities for slabs, footings, round and rectangular/square holes.
◆ Estimates total volume and cost allowing for waste.

◆ Convert Lengths, Area, Volume: Metric and US/Imperial.
◆ Work in Decimal units or Yds/Ft/In/Fraction format to Metric, decimal US.

◆Calculate (add, subtract etc) directly in feet / inches / fractions or decimals.
◆Common functions for quick calculation

Extensive help - Single touch brings up brief help at top of screen ,tap twice on most buttons for more info.

Optimised for all iPhones and iPads using IOS16.4+ in portrait mode.

Infoguide is part of a small building firm based in Western Australia. This app was created by a former Roof Framing Carpenter for our team of carpenters. We use it and believe it will be as helpful to other carpenters as it was for us.

What’s New

Version 3.02

Minor bug fix.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

RevB ,

Too unwieldy to use

I just purchased this in order to figure a stairway that will rise 7' with a 4' landing and another 7' rise. There is nothing intuitive about this and there are no instructions. Save your money. Now if I can just get the App Store to refund my $6.99.

Developer Response ,

Hi RevB,
Sorry you were not happy with the experience.

You can get detailed help on each button by double tapping it.

Also the 'help' button on the top Left of the screen gives a quick overview.

You do not need to enter in any order and values are saved as changed and recalculated.

Main choices are to 1): Select whether the overall stair rise or run are both changing or either is fixed -' Long Press' to Change (orange Buttons).
2): Select if restrictions are to apply - 'Long Press' - ON or OFF - scroll up to set restrictions values.

Please email us from Setting -> More Information->Support and we are more than ready to assist.
Kind Regards
StairCalc - Developers

App Privacy

The developer, Infoguide, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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