Table of Contents

• What is the standard desk height?
• How do you find your correct desk height from your body?
• What should you do when your desk is too high?
• What should you do when your desk is too low?
• Where should the keyboard and mouse sit relative to the desk surface?
• How high should your monitor be, and how far away?
• Why does a laptop-only setup force a compromise?
• What height should a standing desk be?
• How deep does a desk need to be?
• What ValuHub's team learned putting this guide together
• Which ValuHub products fit these use cases?
• Sources
• FAQ

What is the standard desk height?

Standard desk height is 71 to 76 cm (28 to 30 in) from the floor to the top of the surface. That is the band Cornell's ergonomics group gives for a flat surface used for both writing and computer work, and it suits most adults as a desk top [1]. The height that fits you is your seated elbow height, and you have to measure it.

Regular desk height, counter height and standing height compared

Four different numbers get called desk height in furniture listings. They are not interchangeable.

Note what those figures are for. The barrier-free range exists to get a wheelchair under the surface, not to place your elbows. And a counter-height desk at 91.5 cm (36 in) sits 16 cm (6 in) above a regular desk — a perching surface, not a seated one.

Why a standard height desk is not a mistake

The 71-76 cm band is sensible for a desk top: the surface holding your monitor and papers. What it is usually too high for is the keyboard. That is why Cornell pairs a 71-76 cm surface with a keyboard support set lower than it [1]. Treat the two as separate heights and the rest gets simple.

How do you find your correct desk height from your body?

Measure your seated elbow height: floor to the underside of your elbow, sitting properly, shoulders relaxed. Every published office-ergonomics rule reduces to that number. WorkSafeBC states the stakes plainly — a chair, keyboard, mouse and monitor that are not properly adjusted put you at risk of injury [7].

Desk height ergonomics: one rule, one mechanism

Your shoulder muscles hold your upper arms up all day. A keyboard above elbow height makes you lift your shoulders to reach it; a keyboard well below it makes you bend your wrists down or slump forward. Neither costs anything in twenty minutes; both cost you over eight hours.

The target posture is specific. CCOHS puts the elbows between 90 and 110 degrees, forearms horizontal, wrists in line with the forearms rather than bent in any direction [4]. OSHA describes the same neutral posture with a wider 90-to-120-degree band, thighs parallel to the floor, feet fully supported by the floor or a footrest, head level and in line with the torso [8].

Measure your seated elbow height in five steps

1. Set the chair first. CCOHS: adjust the seat so its highest point sits just below your kneecap, then check a clenched fist — about 5 cm (2 in) — fits between the seat's front edge and your calves [9].
2. Sit back. Back against the backrest, feet flat, knees about level with your hips [10].
3. Let your arms hang. Upper arms loose at your sides, shoulders down. People skip this step, and it decides the number.
4. Bend to 90 degrees so your forearms are horizontal.
5. Measure floor to the underside of your elbow, in the shoes you work in. That is your target keyboard height — and your target desk-top height if you have no tray.

A height-by-height starting point

Two published figures let us derive a rough table. CCOHS gives a rule of thumb that optimal seat height is about one quarter of body height [11]. Cornell puts cantilevered elbow rests 20-25 cm (8-10 in) above the seat [12], and CCOHS sets armrest height by raising it until it barely touches the underside of the elbow at about 90 degrees [9]. So seated elbow height is roughly seat height plus 20-25 cm.

A starting point, not a prescription — CCOHS flags the seat-height rule as approximate because leg length, not stature, sets seat height. Notice the pattern, though: the derived keyboard height only reaches 73 cm (29 in) at the very top of the range. For nearly everyone else it lands below the standard desk band. Hence keyboard trays, adjustable chairs and footrests as standard office equipment rather than niche accessories.

What should you do when your desk is too high?

Raise the chair until your elbows are about level with the surface, then add a footrest. CCOHS gives exactly this remedy for a workstation that is too high and cannot be lowered [9].

The mechanism explains why the footrest is not optional. Raising the chair does not change the desk; it changes where your elbows are. Lifting the seat 5 cm lifts your elbows about 5 cm, so your shoulders can drop. The cost is that your feet leave the floor, and your lower-leg weight then hangs off the front edge of the seat, pressing into the underside of your thighs. CCOHS is clear you should sit with feet on the floor or a footrest without pressure under the thighs [11], thighs roughly horizontal, knees about level with your hips [10].

A footrest gives your feet a new floor at the new height. CCOHS specifies it should be adjustable, support both feet, and that you keep them flat and firm on it [9]. Raising the chair alone fixes the shoulder problem and creates a pressure problem, so do both or neither. Any firm, non-slip surface passes; anything that rolls or tips does not.

What should you do when your desk is too low?

Raise the desk. Lowering the chair is the instinct, but it runs out of room fast: seat height is set by your leg length, and dropping below the point where your knees sit level with your hips pushes your knees up and your thighs out of horizontal [10]. Once the chair is right, the desk has to move.

• Furniture risers or leg extenders. The cleanest fix. Measure the gap, then support every leg by the same amount.
• Solid hardwood blocks. Each must be wider than the foot of the leg, and the desk must not rock when you lean on the front edge.
• Bed-riser cups for a light desk with round or square legs. Check the load rating against the desk plus monitor.

Keep leg clearance under the desk top inside OSHA's 50-72 cm (20-28 in) range [3], and re-test stability — a desk that is solid at 71 cm can be noticeably less solid at 78 cm. One thing not to do: raise the desk and leave the monitor sitting flat on it. Raising the surface raises the screen, so re-check monitor height after any change.

Where should the keyboard and mouse sit relative to the desk surface?

The keyboard has to be at your seated elbow height. The desk surface only has to be at elbow height if the keyboard sits directly on it. That distinction turns "my desk is the wrong height" into a much cheaper problem.

OSHA puts it simply: elbows about the same height as the keyboard, hanging at your sides, forearms parallel to the floor, wrists straight and in line with the forearms rather than bent up, down or sideways [13]. CCOHS adds placement — keyboard and mouse close to the front of the desk but not at the edge, about 5 cm (2 in) back [4].

What a keyboard tray actually changes

A tray moves the keyboard below the desk top. You keep a standard 71-76 cm surface for monitor and papers while the keyboard sits 5-10 cm lower, where most people's elbows are. If your measured elbow height came out below 71 cm, a tray is the most direct fix short of an adjustable desk.

OSHA lists what a tray must do: adjustable in height and tilt, adequate leg and foot clearance, room for more than one input device [13]. WorkSafeBC adds that it should be stable, hold keyboard and mouse together, and not eat into legroom [7]. That last point is the common failure — a tray bolted under a thick top can drop the keyboard to the right height and jam your thighs against the underside. OSHA notes the work surface should generally be no more than 5 cm (2 in) thick, partly for this reason [13].

Where the mouse goes

Beside the keyboard, at the same height; Cornell's ideal is a mouse 2.5-5 cm (1-2 in) above it [1]. Splitting the two across different heights makes one shoulder work differently from the other all day. CCOHS also advises against resting your wrists on the desk while typing, because that pressure can contribute to contact stress injuries [4].

How high should your monitor be, and how far away?

Top of the screen at or just below eye level, screen about an arm's length away. Your head weighs several kilograms; a screen in the wrong place means your neck works against gravity all day instead of balancing a load over your shoulders.

Height

CCOHS advises the top of the screen should not sit higher than your eye, and recommends slightly below eye level for people using corrective lenses [14]. OSHA adds the useful detail: centre of the screen normally 15 to 20 degrees below horizontal eye level [15]. Cornell turns that into a check you can do without a protractor — your eyes should line up with a point about 5-8 cm (2-3 in) below the top of the monitor casing [1].

Your eyes rest slightly downward, which is why every source points the screen down rather than up. CCOHS describes a preferable visual zone from 15 degrees above to 15 below the normal line of sight, with another 15 degrees further down still acceptable [14]. Downward is cheap; upward is not.

Distance

OSHA prefers 50-100 cm (20-40 in) from eye to screen face, with a floor of at least 50 cm (20 in) [15][3]. CCOHS gives the version you will actually use: an arm's length [14]. Cornell agrees — sit back, raise your arm, and your fingers should just touch the screen [1].

Angle, tilt and side-to-side placement

Two adjustments get skipped. Tilt the screen to face your eyes rather than the ceiling, no more than 10 to 20 degrees [15]. And keep it in front of you; a monitor off to one side leaves your neck rotated all day [10][15]. If you wear progressives, set the screen lower still [14].

Why does a laptop-only setup force a compromise?

Because a laptop bolts the screen to the keyboard. OSHA notes that a laptop workstation creates its own challenges given its design, size and the variety of places people use it [16]. The problem is geometric: the keyboard needs to be at seated elbow height and the top of the screen at or just below eye level. On a typical adult that is a vertical gap of 40 cm or more. A laptop offers about 2 cm of hinge.

So a laptop flat on a desk gives you two options, and both are bad:

• Keyboard right, screen wrong. The keyboard lands near elbow height and the screen sits far below eye level. You look down and forward, pulling your head off the shoulder line and loading the neck.
• Screen right, keyboard wrong. Prop the laptop on books until the screen reaches eye level and the keyboard goes up with it. Now you type at chest height with raised shoulders and bent wrists.

There is no third option while the two are joined. Separate them: raise the laptop until the top of its screen is at or just below eye level, then add an external keyboard and mouse at seated elbow height. A spare monitor does the same job. If you truly work in different places all day, keep flat-laptop sessions short and set up one place properly.

What height should a standing desk be?

Your standing elbow height, which is a different number entirely. CCOHS describes it directly: with a sit/stand desk in the standing position, the platform sits at approximately your standing elbow position, arms held as they would be if you were sitting. Keyboard and mouse stay aligned the same way, and the monitor still needs to sit between horizontal and 35 degrees below your line of sight [6].

For standing work generally, CCOHS keys the figure to the task: about 5 cm (2 in) above elbow height for precision work, where the elbows also need support; 5-10 cm (2-4 in) below for light work; and 20-40 cm (8-16 in) below for heavy work needing downward force [5]. Keyboard work is light work, so aim just below your standing elbow height.

That number sits far above your seated elbow height — the difference is roughly the height of your chair seat. Hence one fixed desk cannot serve both postures. The answer is a height-adjustable desk, a converter that raises keyboard and screen together, or accepting that you sit here and stand elsewhere.

On timing, CCOHS is non-prescriptive: recommendations run from sitting an hour and standing five minutes to switching every 20, 30, 45 or 60 minutes, and the key factor is simply alternating as needed [6]. It also suggests supportive footwear, an anti-fatigue mat where appropriate, and a footrest while standing so you can shift your weight [6].

How deep does a desk need to be?

Deep enough to get the screen at least 50 cm (20 in) from your eyes, which is more depth than most people expect. This is the dimension buyers check least and regret most.

Work it backwards. OSHA's floor is at least 50 cm (20 in), with 50-100 cm (20-40 in) preferred [15][3], measured from your eyes to the face of the screen, not from the front edge of the desk. So the depth you need is that distance, minus how far your eyes sit behind the edge, plus the footprint of whatever the monitor stands on. That last term is what bites: a wide monitor base can occupy 20 cm on its own, so on a desk around 53 cm (21 in) deep the screen can easily end up closer than the 50 cm floor. Two fixes — clamp a monitor arm to the back edge, or buy a deeper desk.

Underneath, OSHA gives 50-72 cm (20-28 in) of vertical leg clearance, and notes that removing a centre drawer creates additional thigh clearance [3]. That matters for the heavily drawered desks that dominate home-office listings, so check where the drawers sit relative to your knees. Width matters less to your body: CCOHS keeps frequently used items within easy reach [10], so the real question is whether keyboard, mouse, notebook and phone fit inside it.

What ValuHub's team learned putting this guide together

The first thing we noticed is in our own catalogue data. Desk listings almost always lead with width, then depth. Height comes last, and on a fair number of listings it is not quoted at all. Across the office desks we link below, exactly one states all three dimensions in its title: the Desk with 8 Drawers at 55.1 in W x 20.9 in D x 29.5 in H — 140 cm wide, 53 cm deep, 74.9 cm high. That sits at the upper end of the 71-76 cm standard band. A textbook standard-height desk.

That tracks how people shop. The desk questions we get are about footprint and storage: will it fit this wall, how many drawers, does it arrive assembled. Height comes up far less often, and usually after the desk has arrived and something feels off. Width and depth problems are obvious the moment you unbox; height problems show up four weeks later in your shoulders.

Second, the fix most people need is not a different desk. On the table above, a 173 cm (5 ft 8 in) adult lands around 63-68 cm (25-27 in) of seated elbow height against a 71-76 cm desk top. No amount of choosing between standard-height desks closes that gap. Three cheap things do: a chair you can raise, something firm under your feet, and getting the keyboard below the desk top.

Third, this changed how we describe one product. The Computer Desk with Keyboard Tray and CPU Stand is not a storage feature, it is an ergonomics feature. A tray lowers effective keyboard height below the desk top — the adjustment most people need, and the one thing a fixed-height desk offers that a plain flat top cannot.

Fourth, a limit worth stating plainly: none of our fixed-height desks can be a standing desk, and none will match your elbow height by accident. What makes one work is the chair, the footrest and the keyboard position, so if your elbow height came out below about 68 cm (27 in), budget for a tray or a footrest alongside the desk. Note too that this guide treats the chair only as the thing you adjust to reach the right relationship with the desk. Which chair to buy is a separate decision, covered in our comparison of office chairs and gaming chairs for long work days.

Which ValuHub products fit these use cases?

All of these sit in our office products collection. Prices change, so check the product page for current pricing.

• Desk with 8 Drawers, 55.1 in W x 20.9 in D x 29.5 in H — from $264.99 CAD. The one desk here that publishes all three dimensions: 140 x 53 x 74.9 cm, standard height at the top of the 71-76 cm band. Suits someone who wants storage and will pair it with an adjustable chair and a footrest. Not for you if your elbow height is well below 71 cm and you will not add a keyboard tray. At 53 cm deep it is tight against the 50 cm minimum viewing distance, so plan on a monitor arm.
• Computer Desk with Keyboard Tray and CPU Stand — check the product page for current pricing. The tray is the point: it lowers the keyboard below the desk top, and the CPU stand clears a tower out of your knee space. Suits anyone whose elbow height came out below the standard band. Not for you if you need a large clear surface for paper work; check tray clearance against your own thigh height first.
• 58 in Home Office Desk with Soft-Close Drawers — from $294.99 CAD. The widest here at 147 cm, so the easiest to keep keyboard, mouse, notebook and phone inside comfortable reach. Suits a dedicated office room, not a shared space. The title states no height, so confirm it and the drawer-bank position against your knees before ordering.
• Mesh Desk Chair with Adjustable Headrest — from $203.99 CAD. Desk height only works if the chair moves: a seat you can raise and lower is what lets you set elbow height against a fixed desk top. Check its seat height range against Table 2, and read the chair comparison linked above first.
• Ergonomic Saddle Stool, height adjustable — from $68.99 CAD. Raising your seat is the cheapest way to meet a desk that is too high. Suits short focused sessions and perching at a taller surface. Not an all-day chair — no backrest, and it sits you higher, so you will need something firm under your feet.

Ordering from us for the first time? Our guide to how ValuHub works covers shipping and returns across Canada.

Sources

1. "Ergonomic Guidelines for Arranging a Computer Workstation," Cornell University Ergonomics Web (CUergo) — https://ergo.human.cornell.edu/ergoguide.html
2. "2010 ADA Standards for Accessible Design, Chapter 9: Built-in Elements" (§902.3; §904.4), United States Access Board — https://www.access-board.gov/ada/chapter/ch09/
3. "Computer Workstations eTool — Workstation Components: Desks," OSHA — https://www.osha.gov/etools/computer-workstations/components/desks
4. "Office Ergonomics — Keyboard Selection and Use," OSH Answers, Canadian Centre for Occupational Health and Safety (CCOHS) — https://www.ccohs.ca/oshanswers/ergonomics/office/keyboard.html
5. "Working in a Standing Position — Basic Information," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/standing/standing_basic.html
6. "Office Ergonomics — Sit/Stand Desk," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/office/sit_stand_desk.html
7. "Office Ergonomics," and the guide "How to Make Your Computer Workstation Fit You" (BK76), WorkSafeBC — https://www.worksafebc.com/en/health-safety/tools-machinery-equipment/office-ergonomics
8. "Computer Workstations eTool — Good Working Positions," OSHA — https://www.osha.gov/etools/computer-workstations/positions
9. "Office Ergonomics — How to Adjust Office Chairs," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/office/chair_adjusting.html
10. "Working in a Sitting Position — Basic Requirements," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/sitting/sitting_basic.html
11. "Office Ergonomics — Ergonomic Chair," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/office/chair.html
12. "Ergonomics of Sitting," DEA 3250/6510 course notes, Prof. Alan Hedge, Cornell University Ergonomics Web — https://ergo.human.cornell.edu/DEA3250Flipbook/DEA3250notes/sitting.html
13. "Computer Workstations eTool — Workstation Components: Keyboards," OSHA — https://www.osha.gov/etools/computer-workstations/components/keyboards
14. "Office Ergonomics — Positioning the Monitor," CCOHS — https://www.ccohs.ca/oshanswers/ergonomics/office/monitor_positioning.html
15. "Computer Workstations eTool — Workstation Components: Monitors," OSHA — https://www.osha.gov/etools/computer-workstations/components/monitors
16. "Computer Workstations eTool — Workstation Components," OSHA — https://www.osha.gov/etools/computer-workstations/components

FAQ

Is 75 cm (29.5 in) a good desk height?

It is a standard desk height, at the top of Cornell's 71-76 cm (28-30 in) band for a flat surface used for writing and computer work. Whether it suits you depends on your seated elbow height. For most adults it is slightly high for the keyboard, which you fix by raising the chair and adding a footrest, or by using a keyboard tray.

What is the difference between desk height and counter height?

A regular desk surface sits at 71-76 cm (28-30 in). Counter height is about 91.5 cm (36 in), the maximum the 2010 ADA Standards allow for the accessible portion of a sales or service counter. That is roughly 16 cm (6 in) above a desk — a standing or perching surface for most adults, not a seated one.

Do I really need a footrest?

Only if you raised your chair to meet a desk you cannot lower. Once your feet leave the floor, your lower-leg weight presses into the underside of your thighs. CCOHS says feet should be supported by the floor or a footrest without pressure under the thighs, and that a footrest should be adjustable and take both feet flat.

Should my monitor be at eye level or below?

The top of the screen goes at or just below eye level, never above it. OSHA puts the centre of the screen 15 to 20 degrees below horizontal eye level; CCOHS gives about 15 degrees or slightly lower. Cornell's practical check: your eye line should meet the screen about 5-8 cm (2-3 in) below the top of the casing.

How high should a standing desk be?

At roughly your standing elbow height, far above your seated desk height — the difference is about the height of your chair seat. CCOHS sets the standing platform at approximately your standing elbow position, arms held as they would be while sitting. For light keyboard work, aim 5-10 cm (2-4 in) below that.