Desk Dimensions Guide: Height, Depth, Width and Monitor Distance
Six measurements decide whether a desk works. Take them before you buy, because depth and clearance are the ones people regret.
5 min read
- Standard desk height (28–30 in)
- 72–76 cm
- Comfortable depth for a monitor (30–31 in)
- 75–80 cm
- Clear floor behind the desk (36 in)
- 90 cm
- Width for a monitor, keyboard and mouse (47 in)
- 120 cm
Most desk problems are measurement problems. The desk is a few centimetres too tall, too shallow for the screen, or jammed so close to the bed that the chair can’t come out. None of that shows up in a product photo.
Here are the numbers that matter, in the order worth checking them: height, depth, screen distance, screen height, width, and the space behind you.
Desk height is set by your elbows, not the desk
Standard desks sit at 72–76 cm (28–30 in). That range was built around a fairly tall person, so a lot of people are working at a desk that’s a little high for them.
The check takes ten seconds. Sit with your feet flat, shoulders relaxed and elbows bent to about 90 degrees. The desktop, or more precisely the keyboard, should land at elbow height. If your forearms slope up to reach the keys, the desk is too tall.
| Your height | Rough seated desk height |
|---|---|
| 163 cm (5 ft 4 in) | about 66 cm (26 in) |
| 170 cm (5 ft 7 in) | about 69 cm (27 in) |
| 178 cm (5 ft 10 in) | about 71 cm (28 in) |
| 185 cm (6 ft 1 in) | about 74 cm (29 in) |
| 191 cm (6 ft 3 in) | about 76 cm (30 in) |
Treat these as a starting point. Leg length and chair height move them a couple of centimetres either way. If the desk is fixed and too tall, raise the chair until your elbows line up, then add a footrest so your feet aren’t dangling. A keyboard tray that sits below the desktop is the other fix, though it eats knee room.
Depth is the number people regret
Width gets all the attention. Depth is what decides whether a monitor is comfortable.
- 60 cm (24 in) is the practical minimum. It fits a laptop and a mouse with a little room in front.
- 75–80 cm (30–31 in) puts a monitor at roughly arm’s length with the keyboard in front of it. That’s where most people end up wanting it.
A shallow desk forces the screen too close, and a bigger screen makes that worse. A monitor arm instead of a riser buys back 10–15 cm by pushing the screen past the back edge, but only if the desk isn’t against a wall.
How far to sit from the screen
Bigger screens need more distance so you can take in the whole panel without turning your head. These ranges are the commonly published ones for 16:9 monitors.
| Screen size | Viewing distance |
|---|---|
| 24 in | 60–80 cm (24–31 in) |
| 27 in | 70–90 cm (28–35 in) |
| 32 in | 80–100 cm (31–39 in) |
Measure your desk depth before you size up. A 32-inch screen on a 60 cm desk is a neck workout.
Put the top of the screen at eye level
Sit up, look straight ahead, and your eyes should meet the top edge of the screen or land just below it. Any higher and your chin lifts to read the top line. Much lower and you hunch.
If it’s too low, lift it on a riser or a stack of books until it lines up. Laptops can’t get there on their own: the screen and keyboard are joined, so you need a stand for the laptop and a separate keyboard and mouse. People who wear progressive lenses often prefer the screen a little lower still, since they read through the bottom of the lens.
One big monitor or two, and how wide the desk has to be
| Setup | Screen width | Desk width to aim for |
|---|---|---|
| One 27 in, 16:9 | about 61 cm (24 in) | 100 cm (40 in) or more |
| One 34 in ultrawide | about 80 cm (31 in) | 120 cm (47 in) or more |
| Two 24 in side by side | about 110 cm (43 in) | 140 cm (55 in) or more |
A 34-inch ultrawide gives one unbroken screen with no bezel down the middle. Two 24-inch monitors split work cleanly, often cost less, and let you turn one vertical. The desk widths above leave room for speakers, a desk lamp or just elbow space at each end. Screen widths vary a little by bezel and stand, so check the listed width of the actual model.
Leave 90 cm behind the desk
Measure from the front edge of the desk to the wall, bed or bookcase behind you. About 90 cm (36 in) lets you pull the chair out and stand up without scraping anything.
Under 75 cm (30 in), the chair starts hitting the wall every time you get up. An armless or folding chair helps there, since arms are usually what catches. Check the door swing too. A door that clips the chair back will get annoying by the second day.
Writing desk or computer desk
A desk under 110 cm (43 in) wide is plenty for a laptop, a lamp and a machined pen or two. It fits a small room and doesn’t dominate it.
Add a monitor, a full-size keyboard (about 44 cm, 17 in, wide) and a mouse, and 120 cm (47 in) is where it stops feeling cramped. The honest tradeoff: a wider desk in a small room often costs you the 90 cm behind it. Measure what’s going on the desk before you measure the wall, and work out the clearance before either.
The short version
- Desktop at elbow height when seated; standard 72–76 cm (28–30 in) suits taller people. The desk height calculator works it out from your height.
- 60 cm (24 in) deep is the floor; 75–80 cm (30–31 in) is comfortable with a monitor.
- Sit 60–80 cm from a 24 in screen, 70–90 cm from a 27 in, 80–100 cm from a 32 in.
- Top of the screen at or just below eye level.
- Leave about 90 cm (36 in) behind the desk to get up without scraping.
Common questions
- What height should a desk be?
- Whatever puts the keyboard at your elbow height when seated, which is roughly 66 cm at 163 cm tall and about 76 cm at 191 cm tall. Standard desks sit at 72 to 76 cm, a range built around a fairly tall person, so many people are working slightly too high.
- How deep does a desk need to be for a monitor?
- Aim for 75 to 80 cm of depth, which puts a monitor at about arm's length with the keyboard in front of it. The practical minimum is 60 cm, enough for a laptop and a mouse. Below that, a larger screen sits too close and the neck pays for it.
- How far away should you sit from a 27 inch monitor?
- Around 70 to 90 cm, the commonly published range for a 27 inch 16:9 panel. A 24 inch screen wants 60 to 80 cm and a 32 inch wants 80 to 100 cm. Check the desk depth against that figure before sizing up, since depth sets the maximum distance available.
- How much space do you need behind a desk?
- About 90 cm from the front edge of the desk to whatever is behind you, which is enough to push the chair back and stand up cleanly. Under 75 cm, the chair hits the wall every time. Check the door swing too, since a door that clips the chair back gets old quickly.
- How high should a monitor be on a desk?
- Top of the screen at eye level or just below it, so a straight-ahead gaze meets the top edge. Higher than that lifts the chin to read the first line; much lower causes hunching. People wearing progressive lenses often prefer the screen a little lower, reading through the lens bottom.
