Desk Footrest Guide and When You Actually Need One

Look under the desks in any open-plan office and you will find a strange collection: shoeboxes, reams of printer paper, an old laptop bag, a stack of hardback books. People improvise footrests because something feels wrong with their legs by mid-afternoon, and they rarely know why.

A desk footrest solves one specific problem, and for people without that problem it does very little. I have set up workstations for colleagues ranging from 152 cm to 196 cm tall, and roughly one in three genuinely needed a footrest. This guide shows how to tell which group you are in, what height and angle to choose, and when a footrest is actually covering up a different mistake.

The One Problem a Desk Footrest Solves

Your desk height is usually fixed, often around 72 to 76 cm. To type with relaxed shoulders, you raise your chair until your elbows sit at roughly desk height. For shorter people, that raised chair leaves the feet dangling or resting only on the toes.

Dangling feet put pressure on the underside of the thighs, right where the seat edge meets them. Over a few hours that can mean numbness, restless legs and a habit of perching on the front of the seat, which undoes any lumbar support you set up. A footrest brings the floor up to meet you.

That is the whole job. It is not a posture cure and it does not fix back pain caused by a badly adjusted chair.

A Two-Minute Test to See If You Need One

Sit at your desk with your chair set to the height that suits your arms. If you have not done that yet, start with our guide to matching chair height to your desk. Then check:

Are both feet flat on the floor with your heels down and no effort?
Can you slide two fingers between the front edge of the seat and the back of your thigh?
Are your knees roughly level with your hips or slightly lower?

If you answered yes to all three, you do not need a footrest. If your heels lift, your thighs press hard into the seat edge, or you keep tucking your feet under the chair, a footrest is likely the fix.

Choosing the Right Height

Measure the gap between the floor and the soles of your feet while sitting at your correct chair height, with your thighs roughly level. That number is your footrest height. For most people who need one, it lands between 5 and 15 cm.

Gap under your heels	Suggested solution
Under 3 cm	Usually no footrest needed. Try a slightly thicker shoe or lowering the chair 1 cm.
3 to 8 cm	Low fixed footrest or a firm foam wedge
8 to 15 cm	Adjustable footrest with several height settings
Over 15 cm	Consider a lower desk or keyboard tray first

That last row matters. A footrest taller than about 15 cm crowds the space under the desk and leaves your knees jammed against the underside. At that point the desk itself is too high for you.

Angle, Surface and Size

Angle

A gentle tilt of 10 to 20 degrees lets your ankles rest naturally. Steeper angles can strain the calves. Adjustable tilt is useful because many people like to change the angle through the day.

Surface

A textured, firm surface stops your feet sliding forward. Soft foam feels comfortable for a week and then compresses unevenly. Rocking footrests suit people who fidget, but they demand constant small muscle work, which some find tiring.

Size

Aim for at least 40 cm wide so you can shift your feet. A narrow footrest forces both feet into one position, which defeats the purpose of reducing static load.

Why a Footrest Is Often the Wrong Fix

Many ergonomic checklists recommend a footrest for anyone whose feet do not touch the floor. In my experience, a good share of those people have a different problem: their chair is too high because they never lowered it after someone else used the desk, or because they raised it to see over a monitor placed too high.

Before you buy anything, check the chain in this order:

Is the monitor at a height that lets you sit at your natural level? If you raised your chair to see the screen, lower the screen first.
Is the keyboard close enough that you are not reaching forward and lifting your seat to compensate?
Is the seat depth right? A seat that is too deep pushes you forward, making your feet feel short of the floor.

Only once those are right should you judge the gap under your feet. I have watched several people return a footrest after a 10-minute monitor adjustment made it unnecessary. If you are working on back support at the same time, set your lumbar support after the footrest, since raising your feet changes how you sit against the backrest.

Cheap Alternatives That Work

You do not have to spend 40 to 80 dollars on a branded footrest to find out whether you need one. Test with something you already own for a week:

A sturdy box packed with paper, taped shut, at the measured height.
A yoga block, which is usually 7 to 10 cm high and has a grippy surface.
A thick wooden board resting on two books, angled slightly toward you.

Avoid stacks of loose books or reams of paper that shift underfoot. If your temporary version makes the afternoon leg ache disappear, then buy a proper adjustable one. If it changes nothing, the problem is elsewhere.

Footrests at a Standing Desk

At a standing desk the purpose changes. A low bar or block 10 to 20 cm high lets you rest one foot at a time, which shifts load off the lower back during long standing periods. Alternate feet every few minutes. It is the same reason bars have a foot rail.

FAQ

Can a desk footrest help with lower back pain?

Sometimes, if the pain comes from perching forward on the seat because your feet cannot reach the floor. It will not help back pain caused by poor lumbar support, a twisted posture or a monitor placed off to one side.

Should tall people use a footrest?

Rarely. Tall people usually have the opposite problem, with knees above hip height. They benefit more from a higher desk or chair than from raising their feet.

How do I know the footrest height is right?

Your heels should rest fully, your thighs should be roughly level, and there should be a small gap between the seat edge and the back of your knees. If your knees rise above your hips, it is too high.

The Takeaway

Do the two-minute test before you buy. Fix the monitor, keyboard and seat depth first, then measure the gap under your heels and test a free stand-in for a week. If your legs feel better, buy an adjustable footrest at that height with a mild tilt and a firm surface. If they do not, save the money and look higher up your setup for the real cause.