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Stair Calculator

Stair Calculator
Total height of stairs (inches):    
Riser height (inches):    
Tread depth (inches):    

Are you planning to build stairs for your home or deck but struggling with the calculations? Don’t worry, our stair calculator can make it easier for you. With this calculator, you can quickly and accurately calculate the measurements for your stairs, including the number of steps, the height and depth of each step, and the length and angle of the stair stringers.

What is a Stair Calculator?

A stair calculator is an online tool that helps you calculate the measurements needed to build a staircase. It can help you determine the number of steps required, the height and depth of each step, and the length and angle of the stair stringers.

By using a stair calculator, you can save time and avoid errors in your calculations, which can help ensure that your stairs are safe and meet building code requirements.

How to Use a Stair Calculator?

Using a stair calculator is easy. First, you need to determine the overall height of the stairs, which is the distance from the floor to the top of the landing. Then, you need to measure the width of the stairs and the height of each riser. Once you have these measurements, you can enter them into the stair calculator, along with the number of steps you want for your stairs.

The calculator will then provide you with the measurements for each step, including the rise and run, as well as the length and angle of the stair stringers.

Stair Calculator Features

Our stair calculator has a number of features that make it easy to use and provide accurate measurements for your stairs. Some of the key features include:

  • Calculation of rise and run for stairs and deck stairs
  • Calculation of the number of steps required
  • Calculation of the height and depth of each step
  • Calculation of the length and angle of the stair stringers
  • Options for customizing the width of the stairs


What Is the Formula For Calculating Stairs?

The formula for calculating stairs is simple. You need to calculate the total height of the stairs, the total run of the stairs, and the number of steps required. You can use the formula “total rise/total run = rise per step” to calculate the height of each step.

What Is the Normal Rise and Run For Stairs?

The normal rise and run for stairs is about 7 inches of rise and 11 inches of run. However, this can vary depending on the building code in your area.

How Do You Calculate Rise and Run of Stairs?

To calculate the rise and run of stairs, you need to measure the height of the space where the stairs will go (total rise) and the distance from the front of the top step to the front of the bottom step (total run). Then divide the total rise by the total run to get the rise per step.

What Is Standard Stair Height?

The standard stair height is usually around 7 feet or 84 inches. However, this can vary depending on the building code in your area.

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John Doe

I am John Doe, a licensed civil engineer and concrete expert. I received my degree in Civil Engineering from Washington State University and have been working in the field for 15 years. Based in Seattle, WA, I specialize in concrete projects and calculations. I have a passion for sharing my knowledge and experience through my website concrete-