U-Shaped Staircase Calculator (180 degree turn, Half turn)

Advanced and user-friendly U-shaped staircase dimensions calculator — Get all sizes stairs, parts drawings, 3D-project and the amount of materials for FREE.

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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
X
Z
Landing
LDW
MDS
Calculate Total Run Along
FTP
FBT
Steps
QT
9
QB
7
SW
SF
SOL
SOR
SP
Stringers
T
WI
Support Joists
JT
JW
Risers
H
HT
AS
FP
Support Posts
SB
Upper Floor Slab
ST
Balustrade
RH
BA
RT
RW
Walls
WT
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Choose Drawing:
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Distance: 0
Calculation results
Staircase Dimensions, Stairwell
  • Angle (Slope/Pitch): 29.05 °
  • Comfortable Staircase Formula (R + G): 46.67 cm
  • Blondel's Formula (2R + G): 63.33 cm
  • Rise (Step Height): 16.67 cm
  • Tread Depth (Step Width): 35.5 cm
  • Going: 30 cm
  • Number of Steps: 16 pcs.
  • Stairway Width: 100 cm
  • Minimum Throat Depth: 15.43 cm
Materials for construction
Lower Stringers
  • Width: 30 cm
  • Length: 238.29 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.057 m3
Upper Stringers
  • Width: 30 cm
  • Length: 317.44 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.076 m3
Straight Steps
  • Tread Depth: 35.5 cm
  • Length: 100 cm
  • Thickness: 4 cm
  • Quantity: 16 pcs.
  • Volume: 0.227 m3
Risers
  • Width: 12.67 cm
  • Length: 100 cm
  • Thickness: 2.5 cm
  • Quantity: 16 pcs.
  • Volume: 0.051 m3
Landing
  • Width: 105.5 cm
  • Length: 200 cm
  • Thickness: 4 cm
  • Quantity: 1 pcs.
  • Volume: 0.084 m3
Balustrade
  • Handrail Width: 8 cm
  • Handrail Thickness: 4 cm
  • Balustrade Length: 574.55 cm
  • Volume: 0.018 m3
Balusters
  • Width: 5 cm
  • Length: 86.81 cm
  • Quantity: 17 pcs.
  • Volume: 0.037 m3
Newel Posts
  • Width: 8 cm
  • Length: 106.67 cm
  • Quantity: 2 pcs.
  • Volume: 0.014 m3
Support Posts
  • Width: 8 cm
  • Length: 129.33 cm
  • Quantity: 8 pcs.
  • Volume: 0.066 m3
Landing Support Joists
  • Width: 15 cm
  • Total Length: 970 cm
  • Thickness: 5 cm
  • Quantity: 7 pcs.
  • Volume: 0.073 m3
Initial parameters
Display
  • Units: cm
  • Drawing Color: color
Staircase Dimensions, Stairwell
  • Total Rise: 300 cm
  • Total Run: 370 cm
  • Stairway Width: 100 cm
Landing
  • Stair Landing Depth: 100 cm
  • Opening between Stairways: 0 cm
Calculate Total Run Along
  • Upper Stairway:  selected
Steps
  • Quantity (Upper Stairway): 9 pcs.
  • Quantity (Lower Stairway): 7 pcs.
  • Thickness: 4 cm
  • Tread Overhang (Nosing): 3 cm
  • Tread Overhang (Left Side): 3 cm
  • Tread Overhang (Right Side): 3 cm
Stringers
  • Thickness: 4 cm
  • Width: 30 cm
Support Joists
  • Thickness: 5 cm
  • Width: 15 cm
Risers
  • Thickness: 2.5 cm
  • End with Riser: 0 cm
Support Posts
  • Width: 8 cm
Upper Floor Slab
  • Thickness: 20 cm
Balustrade
  • Balustrade Height: 90 cm
  • Baluster Width: 5 cm
  • Handrail Thickness: 4 cm
  • Handrail Width: 8 cm
Walls
  • Thickness: 20 cm
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How to calculate U-Shaped 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. Choose how to calculate total run — along upper stairway, FTP, along lower stairway, FBT.
  • Step 5. Input the stair, stairwell dimensions — total rise, Y*, total run, X, stairway width, Z, opening between stairways, MDS.
    * from the 1nd floor level to the 2nd floor level
    * total rise = stairwell height (if top step is on the 2nd floor level)
  • Step 6. Input the landing parameter — depth, LB*.
    * landing depth = distance from upper stairway bottom step to wall
  • Step 7. Input the landing support joists parameters — thickness, JT, width, JW.
  • Step 8. Input the support posts parameter — width, SB.
  • Step 9. Input the steps parameters — number of steps on upper stairway, QT, number of steps on lower stairway, QB, thickness, SW, nosing, SF*.
    * nosing = tread overlap
  • Step 9.1. Select to install the top step below 2nd floor level or keep it at the 2nd floor level, SP.
  • Step 10. Select to install risers or not, H.
  • Step 10.1. Input the risers parameter — thickness, HT.
  • Step 11. Input the stringers parameters — thickness, T, width, WI.
  • Step 12. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
  • Step 13. Input the upper floor slab parameter* — thickness, WT.
    * required for visualization only
  • Step 14. Input the wall parameter* — thickness, WT.
    * required for visualization only
  • Step 15. Please check all entered values, click the «Calculate» button and get a U-Shaped Staircase with Landing design.

 

Plans of Staircase 180° Turn — Layout Notations 

Drawing U-shaped Staircase with Landing
Drawing Half Turn Staircase with Landing
Optimal Step Size
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