Spiral Staircase Calculator · Design & Dimensions

Spiral Staircase Calculator

Calculate rise, tread depth, number of steps & total rotation

Units

Staircase Dimensions

Total Height (Floor to Floor)

Diameter (Center to Center)

Riser Height (per step)

Tread Depth (at walk line)

Calculation Mode:

Calculate by Riser Height Calculate by Number of Steps

Building codes: Riser 15-20 cm (6-8 in), Tread min 23 cm (9 in) at walk line (2/3 diameter).

Spiral Staircase Results

🪜 Staircase Summary

Number of Steps—

Riser Height (actual)—

Tread Depth (walk line)—

Total Rotation (degrees)—

Angle per Step—

Walk Line Radius—

Code Compliance—

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Creator & Maintainer

Faiq Ur Rahman is a web designer, digital product developer, and founder of Toolraxy, a growing platform of web-based calculators and utility tools. He specializes in building structured, user-friendly tools focused on health, finance, productivity, and everyday problem-solving.

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Spiral Staircase Calculator

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Creator & Maintainer

Faiq Ur Rahman

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