Straight Staircase Calculator

Free straight staircase 3D-designer for building comfortable stairs and determining its dimensions (stringers, steps, angles, rise, run).

Error calculationPlease check your input
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
Steps
QS
18
SW
SF
SOL
SOR
SP
Stringers
T
WI
Risers
H
HT
AS
FP
Upper Floor Slab
SX
ST
Balustrade
RH
BA
RT
RW
Walls
WT
Switch interface
Choose Drawing:
Switch interface
Distance: 0
Calculation results
Staircase Dimensions, Stairwell
  • Angle (Slope/Pitch): 32.42 °
  • Comfortable Staircase Formula (R + G): 45.43 cm
  • Blondel's Formula (2R + G): 63.08 cm
  • Rise (Step Height): 17.65 cm
  • Tread Depth (Step Width): 33.28 cm
  • Going: 27.78 cm
  • Number of Steps: 16 pcs.
  • Stairway Width: 100 cm
  • Minimum Throat Depth: 15.1 cm
Materials for construction
Stringers
  • Width: 30 cm
  • Length: 524.45 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.126 m3
Steps
  • Tread Depth: 33.28 cm
  • Length: 100 cm
  • Thickness: 4 cm
  • Quantity: 16 pcs.
  • Volume: 0.213 m3
Risers
  • Width: 13.65 cm
  • Length: 100 cm
  • Thickness: 2.5 cm
  • Quantity: 16 pcs.
  • Volume: 0.055 m3
Balustrade
  • Handrail Width: 8 cm
  • Handrail Thickness: 4 cm
  • Balustrade Length: 542.76 cm
  • Volume: 0.017 m3
Balusters
  • Width: 5 cm
  • Length: 86.85 cm
  • Quantity: 17 pcs.
  • Volume: 0.037 m3
Initial parameters
Display
  • Units: cm
  • Drawing Color: color
Staircase Dimensions, Stairwell
  • Total Rise: 300 cm
  • Total Run: 450 cm
  • Stairway Width: 100 cm
Steps
  • Quantity: 16 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
Risers
  • Thickness: 2.5 cm
  • Install Risers behind Treads: 0 cm
  • End with Riser: 0 cm
Upper Floor Slab
  • Slab Overhang: 100 cm
  • 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 Straight 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*, total run, X**, stair width, Z***.
    * from the 1nd floor level to the 2nd floor level
    * total rise = stairwell height (if top step is on the 2nd floor level)
    ** total run = stairwell length (if upper floor slab non-overlapping staircase)
    *** stair width = stairway width
  • Step 5. Input the steps parameters — quantity, QS, thickness, SW, nosing, SF*.
    *nosing = tread overlap
  • Step 5.1. Select to install the top step below 2nd floor level or keep it at the 2nd floor level, SP.
  • Step 6. Select to install risers or not, H.
  • Step 6.1. Input the risers parameter — thickness, HT.
  • Step 7. Input the stringers parameters — thickness, HT, width, WI.
  • Step 8. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
  • Step 9. Input the upper floor slab parameters* — thickness, ST, overlap, SX.
    * required for visualization only
  • Step 10. Input the wall parameter* — thickness, WT.
    * required for visualization only
  • Step 11. Please check all entered values, click the «Calculate» button and get a Straight Sawtooth Staircase design.

 

Plans of Straight Staircase — Layout Notations 

Drawing Straight Open Stringer Staircase
Drawing Straight Staircase
Optimal Step Size
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