Stringer Length Calculator

| Added in Construction

What is Stringer Length and Why Should You Care?

Stringer Length is essentially the length of the structural component that supports your staircase. Without an accurate measurement, your stairs could be unstable or just plain awkward to walk on.

If you're planning to build stairs or just curious about how these calculations work, knowing how to calculate stringer length can save you a lot of headaches. It's a fundamental aspect of making sure your stairs are both safe and comfortable.

How to Calculate Stringer Length

Calculating the stringer length is simpler than it sounds. We use a basic formula that can be adjusted for both imperial and metric units:

[\text{Stringer Length} = \text{Total Number of Steps} \times 14 \text{ inches}]

Where:

  • Stringer Length is the desired length you want to calculate
  • Total Number of Steps is the count of steps in your staircase
  • 14 inches is a constant used for the calculation

For metric units, convert using 1 inch = 2.54 cm:

[\text{Stringer Length} = \text{Total Number of Steps} \times 35.56 \text{ cm}]

Calculation Example

Let's put this into practice with an example.

Example Problem:

Step 1: Determine the total number of steps.

For this example, let's say you have 8 steps.

Step 2: Apply the formula.

[\text{Stringer Length} = 8 \text{ steps} \times 14 \text{ inches}]

[\text{Stringer Length} = 112 \text{ inches}]

That's it! Your stringer length is 112 inches.

For the metric calculation:

[\text{Stringer Length} = 8 \text{ steps} \times 35.56 \text{ cm}]

[\text{Stringer Length} = 284.48 \text{ cm}]

So your stringer length would be 284.48 cm in the metric system. Calculating stringer length doesn't have to be daunting. Just follow the simple steps and you'll have the perfect measurement.

Frequently Asked Questions

A stringer is the structural component that supports your staircase. It runs along the sides of the stairs and holds the treads and risers in place.

The 14-inch constant accounts for the diagonal length needed per step, combining typical rise and run dimensions in standard stair construction.

This calculator provides a good estimate for standard residential stairs. Custom stairs with unusual rise or run dimensions may require different calculations.

Yes, it is wise to add a few extra inches to your lumber purchase to account for cutting and any adjustments needed during installation.