How to measure for a stair runner – experts reveal the golden rule for getting your measurements just right

A guide to the best and easiest method to measure for your stair runner, according to flooring experts

A grey staircase with a black and white stair runner leading into a hallway
(Image credit: Future PLC/Malcolm Menzies)

If you’re on the market for a stair runner, you’ve probably encountered the issue of not being quite sure how to best measure for your stair runner to get the most accurate results with the least amount of effort.

Installing a stair runner is a great staircase idea if you’re looking for ways to make your stairway look and feel cosier and more stylish. Not to mention all the practical benefits stair runners provide.

‘Runners can offer more traction and stability, making for fewer slips and accidents, as well as contributing to noise reduction on bare stairs, and bringing a touch of aesthetic elegance to a stairway,’ says Daniel Prendergast, director at The Rug Seller.

But as far as measuring for your stair runner ideas goes, our flooring experts share their fail-proof, step-by-step guide that’s easy to understand and follow. But just to avoid any errors, Daniel’s first top tip is to ‘measure twice and order once’.

A narrow hallway with a grey staircase at the end of it covered in a striped stair runner

(Image credit: Future PLC/Adelina Iliev)

How to measure the ideal length of your stair runner?

As far as hallway flooring ideas go, stair runners are up there for us. And while measuring for one can seem like a daunting task, there’s in fact quite an easy formula that will take the guesswork out of it. And all you need is a flexible tape measure like this Stanley one at Amazon – it’s better than a regular tape measure as some staircases can be curved and irregularly shaped.

‘When measuring the length of stair runners, accuracy is key for securing a perfect fit,’ starts Liam Cleverdon, flooring trends expert at Flooring King, going back to Daniel’s ‘measure twice and order once’ advice.

Liam continues, ‘To do this, you’ll need two key measurements – the size of the depth and height of a step. Then, taking these figures, add them together and multiply them by the number of steps in the home. This will give you the total length of the stair runners. It’s always best to add a few extra inches, accounting for any overhang or adjustments.’

Daniel at The Rug Seller adds, ‘If there’s a landing area between stairs, measure that length separately and add it to your total. And if your steps have an overhang or bullnose, make sure that you’ve also included that in your calculations.’

A black-painted staircase with a beige stair runner and a gallery wall

(Image credit: Future PLC/Caroline Mardon)

How to choose stair runner width?

While the length of your stair runner needs to be very precise in order for it to work with your staircase, its width is not so much set in stone as there are a few variables and things to consider which will differ from one home to another.

‘When choosing the width for a stair runner, think about both the width of the stairs and the desired aesthetic. A runner that covers more width on a narrow staircase, for example, can help make the stairs feel wider. For a wider staircase, leaving more space on the sides can result in a more elegant appearance. The runner should essentially complement the overall decor and functionality of your staircase,’ Daniel explains.

A narrow hallway with a white-painted staircase at the end covered with a beige stair runner

(Image credit: Future PLC/Chris Snook)

How much space should be on each side of a stair runner?

And yes, while the perfect width of a stair runner is more subjective than its length, there still is a golden rule that experts largely follow. This stairway carpet idea creates a balanced look so it’s one to know about.

‘It’s usual to leave about 10 centimetres on either side of the runner for balance and visual contrast, but this comes down to personal preference, the width of the staircase, and the flooring underneath. If you have a polished wood floor, for example, you might want to leave a bigger gap to show it off,’ Daniel says before adding. ‘Deduct the desired width of your runner from the width of your stairs and divide it by two to give you the exact gap you’ll need to leave on either side.’

Our stair runner top picks

So now that you know how to measure for your chosen stair runner, there’s nothing stopping you from making your staircase stylish and chic.

Sara Hesikova
Content Editor

Sara Hesikova has been a Content Editor at Ideal Home since June 2024, starting at the title as a News Writer in July 2023.

Graduating from London College of Fashion with a bachelor’s degree in fashion journalism in 2016, she got her start in niche fashion and lifestyle magazines like Glass and Alvar as a writer and editor before making the leap into interiors, working with the likes of 91 Magazine and copywriting for luxury bed linen brand Yves Delorme among others.