Stair Calculators

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By Construction Type

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Calculator Details

Straight Staircase Calculator

The straight staircase is the most common residential stair design. Our calculator lets you set the floor-to-floor height, number of steps, tread depth, and stair width. The 3D model shows exact proportions with realistic materials — choose from pine, oak, veneer, or plywood with various stain and enamel finishes. The calculator validates dimensions against building codes and displays rise height and stride length in real time. Available with or without risers, with multiple railing options including square, cylindrical, English-style, forged, and glass balusters.

L-Shaped Staircase Calculator

An L-shaped staircase turns 90 degrees, making it ideal for corner installations. Choose between winder steps (3 radiating treads at the turn) or a landing platform. Set the number of steps before the turn to position the landing exactly where you need it. The 3D visualization shows precise winder geometry, and 2D plan views help you verify the staircase fits your floor opening.

U-Shaped Staircase Calculator

U-shaped stairs fold back on themselves with a 180-degree turn, requiring the least floor space for a given height. Our calculator supports both winder and landing configurations. Adjust the gap between parallel flights and the number of steps in each section. This is the most popular choice for two-story homes with limited stairwell space.

Double Turn (U-2L) Staircase Calculator

The double turn staircase features two independent 90-degree turns with a middle flight between them. This offers maximum layout flexibility — you can position each turn independently. Set the number of steps before the first turn, between turns, and after the second turn. Available with winder steps or landings at each turn point.

Metal Frame Staircase Calculator

Metal frame stairs combine a steel structure with wooden treads for a modern, industrial aesthetic. The calculator offers straight, L-shaped, and U-shaped configurations. Choose from 6 metal colors: stainless steel, black (RAL 9005), white (RAL 9010), anthracite (RAL 7016), champagne, and copper. Add glass railing panels for a contemporary look. The server-side geometry engine computes accurate steel beam profiles and tread connections.

Floating Glass Staircase Calculator

Our newest and most advanced calculator. Floating (cantilever) stairs appear to hover in mid-air, anchored to a wall with no visible support structure. Each step is an individual cantilever beam, typically 60–120 mm thick. The calculator features structural glass railing panels, adjustable LED step lighting (warm white, cool white, or amber), and photorealistic PBR rendering with configurable studio environments (studio, warm interior, cool light, sunset). Choose tread thickness, wood species, and exposure settings for the perfect visualization. Available in straight, L-shaped, and U-shaped configurations.

Comparison: Which Stair Type Is Right for You?

Type Space Needed Cost Range Best For
Straight Staircase Large (full run length) $ Long hallways, simple builds
L-Shaped Staircase Medium $$ Corner positions, visual interest
U-Shaped Staircase Compact $$ Small openings, standard homes
Double Turn (U-2L) Flexible $$$ Custom layouts, large homes
Metal Frame Same as wood equivalent $$$ Modern interiors, durability
Floating Glass Minimal (wall-mounted) $$$$ Luxury homes, architects