Spiral Staircase Calculator

Equal rises and rotation increments; count rises through the upper floor. Geometric calculation does not establish building-code compliance.

Your workbenchInputs are not stored

Result

Enter your values and run the tool to see your result.

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Riser heightheight/n

Rotation per riserotation/n

Walkline arc goingwalk*rotation*pi/(180*n)

Walkline helix lengthsqrt(height^2+(walk*rotation*pi/180)^2)