How to Calculate Stair Runner Length

At Sophie Cooney Runners, we understand that precision is paramount when ordering a stair runner. That’s why we’ve developed a user-friendly tool to help you calculate stair runner length with ease and accuracy. In this guide, we walk you through every step—measuring straight flights, landings, winding stairs, accounting for extra allowances, and how to navigate our online calculator for the perfect fit.

By the end, you’ll be confident in measuring any staircase—from simple straight steps to half-landings or curves—and discover how our bespoke service and expert guidance guarantee a flawless installation.

Why Accurate Measurement Matters

• A snug, safe fit—free from slipping, bunching, or misalignment
• Enough material for pattern repeats, cutting, and expert installation
• Guarantees that your bespoke Sophie Cooney runner fits your exact staircase dimensions, including edges and design continuity
• Put simply: the right measurement means no unexpected 'oops' moments when it arrives!

Measuring a Straight Flight of Stairs

1. Measure the tread depth, including the bullnose edge, on one representative step.
2. Measure the riser height of the same step.
3. Add tread depth + riser height to get the single-step length (e.g., 25 cm + 20 cm = 45 cm).
4. Count the total number of steps and multiply by the single-step length.
5. Add 10% extra length to accommodate waste and pattern alignment.

Our Sophie Cooney length calculator lets you input your measurements and automatically includes the wastage allowance for a hassle-free calculation.

Including Landings or Half-Landings

• Measure the horizontal length of the landing plus the riser height below it.
• Add this measurement to your stair run total.
• Apply the 10% wastage allowance to the combined figure.

You can enter both step count and landing lengths into our calculator for an instant, seamless result.

Winding or Curved Staircases

• Measure the length of each step along the outer arc, including riser height.
• Sum all individual step lengths.
• Add any landing lengths.
• Apply a standard 10% allowance for cutting and installation.
• If your stairs have more twists than a mystery novel, don’t worry—our team can help navigate the complexities.

Wastage, Pattern Matching & Installation Allowance

• A standard 10% allowance for cutting tolerance, installation adjustments, and minor stair irregularities
• Additional length if your runner features repeating patterns, stripes, border detailing, or continuous design across steps

Our calculator automatically includes this buffer so you receive enough material for expert craftsmanship.

Using the Sophie Cooney Runner Length Calculator

1. Visit our calculator page.
2. Enter your preferred measurement units (cm or inches).
3. Input the number of steps.
4. Provide your step height and tread depth.
5. Select if your staircase is straight or winding.
6. Add landing or half-landing dimensions if applicable.
7. Click calculate to receive your precise runner length in metric and imperial units, including wastage.

It’s fast, accurate, and tailored specifically for our bespoke stair runners.

Why Sophie Cooney Runners Leads in Precision & Service

• Our advanced calculator ensures highly accurate length calculations personalized to your staircase
• Bespoke sizing, pattern alignment, and tailored edge finishes ensure a flawless fit
• Comprehensive installation advice and professional fitting services guarantee your runner lies flat, safe, and seamless
• Explore matching hallway and landing runners, plus creative uses for leftover runner offcuts like cushions or accessories on our inspiration page

We encourage you to measure twice, calculate precisely, and reach out for professional consultation or custom requests. Learning how to calculate stair runner length should be simple and stress-free.

With Sophie Cooney Runners’ clear measurement guide and bespoke calculator, you can effortlessly determine the perfect runner length, whether for straight stairs, winders, or staircases with half or full landings.

For the perfect finish, our expert bespoke sizing, pattern alignment, and installation advice make the journey from calculator to final fit seamless and professional.

Ready to calculate your runner length and select your favourite design? Browse our beautiful collections or contact our team to begin your bespoke stair runner journey today.

Let Sophie Cooney help you get the calculation just right—and transform your staircase with timeless craftsmanship.