**How
To Calculate Slope of Stairs | Stair Slope in Degrees | Staircase Slope
Calculator | Calculating Staircase Slope**

A staircase is one of the most important elements of a building. It allows people to move/access/walk different floors of a building. While planning to construct the staircase, it is always necessary to calculate the angle/slope of the staircase flight, to make sure that it is not too steep.

The calculation of the slope of the stairs is very
simple and easy. It can be done by two methods

**Method 1:** Calculating the angle
using Riser and thread measurement

**Given data:**

Riser = 150mm.

Tread = 250mm.

**Solution:**

Slope = (riser/tread) = 150mm/250mm = 0.6

**Equation**

**Slope
= tan Î¸**

**therefore, **

0.6
= tan Î¸

Î¸ =
tan^{-1 }(0.6)

**Î¸ = 30.96°**

__Stair Calculator__

**Method 2:** Calculating the angle
using the height & horizontal distance of the staircase

**Given data:**

Height of landing = 1250mm.

Horizontal distance = 2075mm.

**Equation**

**tan
Î¸ = (opposite/adjacent) **

**tan Î¸ =** (Height of landing/horizontal
distance)** **= (1250mm/2075mm) = 0.60

**therefore,**

**tan
Î¸ = 0.60**

Î¸ =
tan^{-1 }(0.604)

**Î¸ = 31.07 °**

__Stair Calculator__

@teamlceted advise you to build stairs that are not too steep or not steep enough (a stair slope of 30° to 40° is considered standard). Note: This calculation tool was developed with great care. However, we cannot be held responsible for its liability.

**Also Use:** Stair Case Calculator | Staircase Concrete Calculator | Calculate stair rise and tread

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