The online staircase calculator will calculate the angle of inclination, number of steps, height and span length. A convenient tool for designing stairs in a house, country house or construction site.
Calculate the angle of inclination, the number of steps and the length of the flight of stairs
The online staircase calculator will calculate the angle of inclination, number of steps, height and span length. A convenient tool for designing stairs in a house, country house or construction site. Safety and comfort standards are taken into account.
The calculator takes into account all important parameters: total lift height, step dimensions (height and depth), type of staircase and checks compliance with the safety formula 2h + b ≈ 600–640 mm. The results include the exact number of steps, slope angle, span length and recommendations for improving the design.
Below are practical examples of calculating stairs for various use scenarios with detailed calculations and visualization of parameters.
Standard staircase to the second floor in a private house with optimal comfort parameters.
Входные данные:
Lifting height: 3000 mm
Step height: 180 mm
Step depth: 300 mm
Type: StraightРасчёт:
Quantity: ⌈3000 / 180⌉ = 17 steps
Length: 17 × 300 = 5100 mm
Angle: arctan(180/300) = 30.96°
Formula: 2×180 + 300 = 660 mmРезультат:
17 steps, 5.10 m
Тип:
Optimal
💡 The staircase corresponds to the convenience formula, the angle is comfortable for constant use.
Staircase for a room with a ceiling height of 3.5 meters.
Входные данные:
Lifting height: 3500 mm
Step height: 175 mm
Step depth: 280 mm
Type: StraightРасчёт:
Quantity: ⌈3500 / 175⌉ = 20 steps
Length: 20 × 280 = 5600 mm
Angle: arctan(175/280) = 32.01°
Formula: 2×175 + 280 = 630 mmРезультат:
20 steps, 5.60 m
Тип:
Acceptable
💡 The parameters are within acceptable limits, the angle is a little steep for older people.
Save space while maintaining comfort of use.
Входные данные:
Lifting height: 2800 mm
Step height: 200 mm
Step depth: 250 mm
Type: Rotatable 90°Расчёт:
Quantity: ⌈2800 / 200⌉ = 14 steps
Length: 14 × 250 = 3500 mm
Angle: arctan(200/250) = 38.66°
Formula: 2×200 + 250 = 650 mmРезультат:
14 steps, 3.50 m
Тип:
Optimal
💡 Compact design with optimal comfort formula, suitable for limited space.
Steep stairs to go down to the basement.
Входные данные:
Lifting height: 2200 mm
Step height: 220 mm
Step depth: 200 mm
Type: StraightРасчёт:
Quantity: ⌈2200 / 220⌉ = 10 steps
Length: 10 × 200 = 2000 mm
Angle: arctan(220/200) = 47.73°
Formula: 2×220 + 200 = 640 mmРезультат:
10 steps, 2.00 m
Тип:
Cool
💡 The angle is too steep for comfortable use, the parameters need to be improved.
Gentle ascent with comfortable parameters for people with limited mobility.
Входные данные:
Lifting height: 3200 mm
Step height: 150 mm
Step depth: 350 mm
Type: StraightРасчёт:
Quantity: ⌈3200 / 150⌉ = 22 steps
Length: 22 × 350 = 7700 mm
Angle: arctan(150/350) = 23.20°
Formula: 2×150 + 350 = 650 mmРезультат:
22 steps, 7.70 m
Тип:
Acceptable
💡 Very flat angle and comfortable steps, takes up a lot of space.
Compact solution for limited space.
Входные данные:
Lifting height: 3000 mm
Step height: 200 mm
Step depth: 200 mm
Type: Rotatable 180°Расчёт:
Quantity: ⌈3000 / 200⌉ = 15 steps
Length: 15 × 200 = 3000 mm
Angle: arctan(200/200) = 45.00°
Formula: 2×200 + 200 = 600 mmРезультат:
15 steps, 3.00 m
Тип:
Cool
💡 Compact, but the angle of inclination is on the permissible limit, requires caution when using.
The calculator uses standard formulas for calculating stairs in accordance with GOST and international standards. All calculations are performed automatically based on the entered parameters.
The number of steps is calculated as the ratio of the total rise height to the height of one step, rounded up.
The angle of inclination is calculated through the arctangent of the ratio of the height of the step to its depth. Optimal range: 30–40°.
Checking compliance with the Blondel formula, where twice the height of the riser plus the depth of the tread should be in the range of 600–640 mm for comfortable use.
The total length of a flight of stairs is equal to the product of the number of steps and the depth of one step.
Our staircase calculator provides many benefits for accurate design and safe construction.
Uses current GOST standards and international safety standards. All formulas have been tested and comply with building regulations.
Helps avoid design errors that can lead to costly rework. Accurate calculation of materials reduces costs.
Takes into account all safety and comfort parameters, including the angle of inclination, the size of the steps and the formula for a comfortable staircase.
A simple interface allows you to quickly get all the necessary staircase parameters without special knowledge.
Follow these guidelines to create a safe and comfortable staircase:
Take accurate measurements of the lifting height before starting design.
Follow the formula 2h + b ≈ 600–640 mm for comfortable use.
Choose materials taking into account the type of stairs and operating conditions.
Be sure to install handrails with a height of 900–1100 mm for all stairs above 3 steps.
Provide good lighting, especially on the first and last steps.
Use anti-slip coatings on exterior stair treads.
For limited space, consider turning or spiral staircases.
An inclination angle of 30–40° is optimal for constant use, up to 45° is acceptable for rarely used stairs.
For the comfort of older people, use a lower step height (150–160 mm) and greater depth (300–350 mm).
Number of steps = Total lift height / Step height.
A convenient angle of inclination of the stairs is 30–40 degrees.
Use the formula for a comfortable staircase: 2h + b ≈ 600–640 mm, where h is height, b is depth.
Calculations are performed in accordance with GOST and international safety standards.
This is a formula where twice the step height plus the tread depth should be 600–640 mm.
The height of the step should be from 150 to 200 mm for comfortable ascent.
Yes, the calculator is suitable for calculating both internal and external stairs.
For turning stairs, the additional length of the turntable is taken into account.
Span length = Number of steps × Step depth.
Increase the depth of the steps or add a turntable.
Yes, the calculation principles are the same for all types of stairs.
Increase the depth of the steps or reduce their height to reduce the angle of inclination.
Use lower step heights (150–160 mm) and greater depths (300–350 mm).
The minimum width of stairs in residential buildings is 800 mm.
Consider limited space and use a steeper angle (up to 45°).
These are steps with variable width, used in turning staircases.
For spiral staircases, special formulas are used taking into account the radius.
The height of the railing should be 900–1100 mm from the surface of the steps.
Consider limited space and use folding or extension ladders.
A stringer is an inclined beam on which the steps of a staircase rest.
Use a gentle angle (up to 20°), wide steps and handrails on both sides.
For external stairs, the step depth must be at least 300 mm.
Consider limited space and use compact solutions.
The string is the side beam of the staircase into which the steps cut.
Consider the style of the interior and use modern materials and designs.
For children's stairs, the step height should be 120–150 mm.
Consider panoramic windows and use lightweight structures.
The riser is the vertical part of the step that determines its height.
Use compact solutions and multifunctional designs.
For office stairs, the step depth should be 280–320 mm.
Consider limited space and use modern solutions.
The tread is the horizontal part of the step that is stepped on.
Consider the connection between floors and use convenient solutions.