Free online staircase designer and 3D stair creator
Design stairs online free: model straight, quarter-turn single winder, half-turn double winder and half-landing timber staircases in full 3D. Set rise, going and width, shape kite winder turns, and export IFC4 models and dimensioned DXF drawings. A free stair design app that runs entirely in your browser, with no download, no login and no account required.
- Straight, quarter-turn single winder (L-shape), half-turn double winder (U-shape) and half-landing layouts
- Traditional kite winder setting-out with newel posts, stringers and balustrade
- Live 3D staircase preview with measure and dimension tools
- Rise, going, pitch, total height and width shown as reference values
- IFC4 export with Uniclass 2015 classification for BIM coordination
- Dimensioned DXF plan, four elevations and stepped sections for CAD
- Ideal for new builds, extensions, loft conversions and self-build projects
Architects, Architectural Technologists, BIM coordinators, Surveyors and Contractors working on residential timber staircases. Also suited to homeowners, self-builders and renovators planning a new build, extension or loft conversion staircase.
Tool preview — accept the terms to launch
StairSmith does not check or assure compliance. This free stair design software is a design aid, not an online staircase calculator that verifies regulations. It will let you model a staircase that is right or wrong, and the design remains your responsibility. Reference values shown in the tool are for information only. All outputs must be independently checked and verified by a competent person before any use.