Directory Metric or Imperial

Top tread level with upper floor Top Tread Level with Upper Floor

Total Rise
Ideal Rise
Possible Rises






Total Rise must be greater than Head-room

Restrict extreme measurements, angles etc Creates a link to save or Email current calculation Email Calculation  

Select 'Use Total Run' above to lock Total Run and adjust individual Runs, or 'Use Ideal Run' to adjust Total Run and Angle
Head


Stair Calculator rise run stringer and head-room plan diagram with full dimensions
Direct measure dimensions in diagram Left click, release and drag to measure at full scale in top diagram.

Stair Calculator - stringer diagram with full dimensions
Running Stringer Points (up stringer)
Mark-out


Framing Square and Stair Gauges Measure, mark and cut a template, or use a Framing Square with Stair Gauges to mark out Stringer Notches.

Running Measurements Vertically - Lower Floor to top of each tread (Possible landing heights. Blue = middle)



For concrete stairs, select Concrete Thickness and enter the throat thickness (see diagram) and Stair Width to calculate formwork dimensions and concrete volume.
For timber stairs, select Stringer Width and enter the width of the stringer.

To calculate and display upper floor opening and stair head-room, enter upper floor thickness, check the Show Head-room check-box and drag the Head slider to calculate and animate diagram head-room and floor opening.
To fine tune, click slider to select then use keyboard cursor keys.

DON'T BREATH THE DUST If you're cutting concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks

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Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare. Image Library

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Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.


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To fine tune Slider Controls click to select then use keyboard cursor keys.


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