How to Count Up Stair Treads and Risers

It doesn’t take a lot of time or effort to calculate the number of steps and risers for your staircase. It’s important to know that the measurement should include both the rise and going. The main step is to measure the distance from one floor to another while measuring from edge to edge of each tread will help you figure out how many total stairs there are in your new design.

What is the first step in any staircase design?

The first step in any staircase design is to measure the rise and going of the proposed stair stringer. As a general rule of thumb, you should take your measurements up inside corners. This ensures that your account for any offset between floors that might be caused by uneven sub flooring or other obstructions that can’t be avoided. If you are looking for wooden stair treads, then Unique Wood Products is the best place for you.

How to calculate the number of stairs in a staircase?

The total number of treads on any given flight of stairs equals the rise divided by 12, plus 1. The risers are counted by multiplying the rise by 4, then dividing that number by twelve. That number will be equal to the number of risers per flight.

How do you count upstairs with different sized risers?

You can easily count upstairs with different sized risers by using a few simple tools. You will need a measuring tape, stair riser angle finder, and a pencil that is long enough to reach across the stringer from tread edge to tread edge. Measure the height of every stair step on one side of the stringer at the middle point between the two ends. Write down each of these heights to the side of your drawing paper. Measure the distance of every step on one side of the stringer at the middle point between the two ends. Write down each of these horizontal lengths to the side of your paper as well.

Count up stair treads and risers by using the following equation:

Tread Riser = Stride ÷ Riser * Rise

Tread Riser = Stair Tread Number ÷ Angle of Each Riser * Actual Rise

Are there any exceptions to this rule?

There are no exceptions to this rule. The only thing you need to remember is that it’s important to be mindful that your measurements should include the rise as well as the going.

How can you make sure of this?

It’s extremely important to measure up all of your stairs in order to get an accurate reading on the stringer. Also, some larger homes in Houston have a center hall with several staircases that are connected to the entrance of the home.

What tools should you use when measuring your stairs?

When designing and building a flight of stairs, it is important to make sure you have the correct measurements from floor to floor. There are various tools available that can help with this task. These include (but are not limited to) laser levels, measuring tapes, string lines and special stair gauges. The most common tool used is the measuring tape. This is a relatively inexpensive tool that can be purchased at most hardware stores and home improvement centers, but it does require some degree of skill to operate. It should generally be used in conjunction with other tools unless you are proficient at using this device.


If you need to know how many risers and treads your staircase has, it’s easy! Simply measure the rise of the stairs (the vertical distance between floors) and go (how long each stair is). To get started on building a beautiful new set of steps for your home or business in Houston, contact us today. We’ll happily provide you with an estimate without any obligation whatsoever.