Calculate a
staircase —
in five minutes,
without AutoCAD.
Online configurator for joinery shops and private builders. SNiP/GOST geometry, code validation, wood volume estimation and JSON+PNG export — in the browser, no backend.
Type
Room
Geometry
Materials
Volume & cost
Check
Fourgeometries, one domain logic.
Straight
L-shape
U-shape
Spiral
Regulations
The Blondel formula and SP 54.13330.2022 (formerly SNiP 2.08.01-89) are applied to every calculation automatically.
Materials
Oak, ash, beech, birch, pine, larch — with density and market price per m³.
Export
JSON with configuration and PNG of the 2D plan — one click.
Privacy
Calculation and 3D render run entirely client-side. No parameter ever leaves your browser.
From dimensionsto a quote.
The pipeline is the same for every staircase type. Steps don't block each other — every parameter lives in a single scene, change any one and see the consequences.
Room
Length, width, height, slab thickness, opening position.
Geometry
Step count, riser height, tread width, slope angle.
Materials
Wood species, stringer cross-section, tread thickness, railing and balusters.
Export
JSON and PNG. Configuration is preserved in the URL.
Standards baked into the math
GoldenCalc validates every geometry against Russian and Belarusian comfort and safety standards. If parameters fall outside the range, you get a warning before export.
Twice the riser height plus the tread width — a measure of step comfort.
Sweet spot for living spaces. Up to 60° is acceptable for attics.
Lower bound per SP 54.13330 for residential buildings. Recommended — 1,000 mm.
From thereference
All articles →
Straight staircase
The simplest classic configuration — connects two levels in a straight line, with no turns and no change of direction.
L-shaped staircase
A configuration of two flights at a right angle — forms an «L» from above. Often placed in a room corner; saves length.
U-shaped staircase
Two parallel flights with a 180° turn — the most popular type in multi-storey buildings. «Folds» the length in half.
Spiral staircase
Steps arranged in a circle around a central axis — the most compact form, occupying 1.5–2 m². A striking decorative element.
Room
The dimensions of the room — length, width, and height — where the stair will be installed. A foundational concept in architecture and construction.
Floor height
Vertical distance from the finished floor of one storey to the finished floor of the next, including slab thickness.
Slab thickness
Total thickness of the structure separating adjacent storeys — from the lower room's ceiling to the upper room's floor.
Opening
A through hole in a wall, partition, or floor slab. In the configurator, this means the stairwell opening.
Opening length
The longitudinal (largest) dimension of the slab opening, measured parallel to the direction of ascent. The most important size for the stair.
Flight width
Distance perpendicular to the movement direction, between the structures bounding the passage. Total and clear widths are distinguished.
Tread overhang (nosing)
How far the horizontal tread overhangs the riser or frame. The «nose» visible from the side.
Tell usabout the job —
we'll reply within 24 hours.
If the constructor doesn't cover your geometry, you need an on-site measurement, a non-standard stringer cross-section, or advice on species for your budget — write to us. The form goes straight to the workshop.