Interactive 3D model of the staircase. Arrow keys rotate, plus and minus zoom, R resets the view, F fits it, Escape clears the selection.
Within comfort ranges
Riser
184.4 mm
Risers / Treads
16 / 15
Usable width
730 mm
Min. headroom
2173 mm
Chioccilator, free spiral staircase configurator
Chioccilator is a free online configurator for spiral staircases. Enter the ceiling height, slab thickness and the diameter of the round opening, then see the risers, rotation, going and headroom update in a live 3D preview. Everything runs in your browser: there is no sign-up and no server stores your design.
What you can do
Interactive 3D preview of the staircase, column, treads, landing and handrail
Plan view, step-by-step chart and table, and comfort checks for every tread
Export DXF drawings, CSV tables, JSON project files, PNG images and a share link
Available in English, Italian, Spanish, French and German
Free, no sign-up, and your data stays in your browser
Frequently asked questions
What is Chioccilator?
A spiral staircase calculator and 3D configurator. It turns the floor-to-floor height and the opening diameter into a complete staircase with risers, treads, rotation and headroom.
Is it free and private?
Yes. Chioccilator is free, needs no account and has no database. Your design is kept in your browser, or in the JSON file and share link you choose to create.
Do the checks guarantee building-code compliance?
No. The checks are indicative comfort guidelines, not a building code. Always verify the design with a qualified professional and your local regulations.