How To Measure Stairs For Carpet: Step-by-Step Guide

Planning to install new stair carpet or stair runners? Getting the measurements right is essential for a professional fit and seamless finish. Whether you’re going for full stair carpeting or a stylish runner, measuring carefully helps avoid waste, reduce costs, and ensure a perfect result.

In this guide, we’ll walk you through how to measure stairs for carpet in simple, easy-to-follow steps, with graphics to demonstrate each part of the process.

For even more detail, don’t forget to check out our complete measuring guide.

Why Accurate Stair Measurements Matter

Correct measurements help you:

Avoid buying too much or too little carpet
Ensure a professional, wrinkle-free installation
Reduce waste and save money
Achieve a perfect, tailored look on straight, curved, or winding stairs

What You’ll Need

A sturdy tape measure (metric or imperial)
Notepad and pen/pencil
Calculator (optional)

Step-by-Step: How To Measure Your Stairs

Follow these clear steps to get precise measurements:

1. Count and Identify Your Steps

Count the total number of steps in your staircase.
Note any variations (e.g. winders, curved steps, landings).
Each type may need a slightly different approach.

2. Measure Tread Depth

Place the tape measure on the step’s flat part (tread).
Measure from the riser (vertical part) at the back to the front edge (nosing).
Record this measurement for each step type.

3. Measure Riser Height

Measure the vertical part o f the step (riser) from top to bottom.
Include any overlap or nosing if needed.

4. Measure Stair Width

Measure the width of your stairs from one edge to the other.
For runners, decide how much of the wood you want exposed on each side.

5. Account for Nosing and Curves

For stairs with nosing (overhang), include its depth in your tread measurement.
For winders or curves, measure the widest part of each step carefully.

6. Multiply and Calculate Total Length

For each step: Tread + Riser = Total per step.
Multiply by the number of steps.
Add any landings or special shapes separately.
Add ~10% extra for fitting flexibility.

Tips for Accurate Measurement

Always double-check each measurement.
Note any unusual shapes or features.
Measure twice, cut once!
Contact our sales team for advice in case of any confusions.

Final Note: Get It Right First Time

Measuring your stairs carefully is the first step toward a flawless new look. With these easy steps and a little patience, you’ll have everything you need to order the perfect amount of carpet or runner.

Our team is here to help with advice, samples, and custom cuts to make installation simple.

Ready to start?
Explore our stair carpet and runner collections or contact us today for expert help with your order.