# Circular Staircase Calculator

Try professional circular (curved) staircase calculator - quality tools for 3D design, creating plans and estimates. It's user-friendly, easy and FREE.

the Calculator will be available after changes in the relevant parameters.
Click "Calculate" to open the options window.
Switch interface
Display
DU
CL
Staircase Type
LF
RG
Staircase Dimensions, Stairwell
Y
D
ID
RA
Steps
Q
18
Switch interface
Choose Drawing:
Switch interface
Distance: 0
Calculation results
Staircase Dimensions, Stairwell
• Angle (Slope/Pitch): 24 °
• Comfortable Staircase Formula (R + G): 68.51 cm
• Blondel's Formula (2R + G): 88.51 cm
• Rise (Step Height): 20 cm
• Maximum Tread Depth: 62.37 cm
• Going: 48.51 cm
• Rotation Angle: 360 °
• Number of Steps: 15 pcs.
• Stairway Width: 100 cm
Materials for construction
Steps
• Maximum Tread Depth: 62.37 cm
• Length: 101.12 cm
• Thickness: 20 cm
• Quantity: 15 pcs.
• Volume: 3.686 m3
Initial parameters
Display
• Units: cm
• Drawing Color: color
Staircase Type
• Left Turn:  selected
Staircase Dimensions, Stairwell
• Total Rise: 300 cm
• Staircase Diameter: 300 cm
• Internal Diameter: 100 cm
• Rotation Angle: 360
Steps
• Quantity: 15 pcs.
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## How to Calculate Circular Curved Stair?

• Step 1. Choose the measurement units, DU — mm, cm, m, inches, feet.
• Step 2. Choose the drawing color, CL — monochrome, color.
• Step 3. Choose the staircase type — left turn, LF, right turn, RG.
• Step 4. Input the stair, stairwell dimensions — total rise, Y*, staircase diameter, D**, staircase internal diameter, ID, rotation angle, RA.
* from the 1nd floor level to the 2nd floor level
* total rise = stairwell height (if top step is on the 2nd floor level)
** staircase diameter = stairwell diameter
• Step 5. Input the steps parameters — quantity, Q, thickness, SW.
• Step 6. Please check all entered values, click the «Calculate» button and get a Circular Staircase design.