Stairs Calculator

The Stairs Calculator will give you the length of the stringer underneath the steps in a straight stair and the optimal number of steps from the values you enter of the total rise, the depth, thickness and the overlap of the steps. You will also get a detailed construction description with photos where all the measurements you need are included together with carpenter's advice when building your new stair.

The construction instruction is located at this web address The content can be translated to your language using the integrated Google Translate tool. The calculated values from the Stairs Calculator App will be inserted into the context. You can also print or bookmark the page and all your measurements will be stored for later.

This version is only for metric measurements (meter and millimeter). An Imperial (Feet) version will be published later on.

We appreciate any feedback! Please use the contact form at or send a picture of your new stair at and it will be published on the page in a gallery.

Keywords: stair calculator, stairs calculator, staircase calculator, calculating stairs, deck stair, deck stairs, trappkalkylator, bygga trappa.

Disclaimer: or developers can not be hold responsible for any construction failure.
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What's New

* Nose Overlap added to the drawing
* Values maintain when the device display orientation changes
* Updated to support the latest Android Pie version (API level 28)
* Responsive support updates
* Fine tuned some values coordinates on the drawing
* Added https to the form url
* The drawing size is maintained when the device's numeric keypad is displayed
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Additional Information

Eligible for Family Library
Eligible if bought after 7/2/2016. Learn More
August 11, 2018
Varies with device
Current Version
Varies with device
Requires Android
Varies with device
Content Rating
Offered By
BYGGOTEKNIK Dammlyckevägen 20 429 41 Särö
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