What Stair Calculator does
A dimensioned stair geometry study with calculations and coordination warnings.
How it fits into the workflow
- Choose units and record floor-to-floor height and available geometry.
- Compare practical riser counts and set the proposed going.
- Review the dimensional trace and coordinate omitted safety and regulatory requirements.
Where it can save time
Comparing practical riser counts against one floor-to-floor height quickly exposes how each option changes going, pitch and plan length. That can prevent several rounds of manual arithmetic while a plan is still moving.
Compliance and professional limits
The geometry can be reviewed alongside Approved Document K in an England context, but the calculator does not cover the whole stair requirement. Landings, headroom, guarding, handrails, accessibility, structure and fire safety remain separate checks.
Professional boundary: This is a geometry check only; landings, headroom, guarding, handrails, accessibility, structure and fire safety require separate review.
Official and standards references
In summary
Stair Calculator is most useful when its saved output remains connected to the project decision and is reviewed within the limits described above.