Quick answer
A standard desk is 120 to 160 cm (47 to 63 in) wide, 60 to 80 cm (24 to 31 in) deep, and 72 to 76 cm (28 to 30 in) tall. Compact desks start around 100 × 50 cm (39 × 20 in). Behind the desk, plan at least 75 cm (30 in) for the chair, plus another 60 cm (24 in) if people walk past. The chair space is what most rooms run out of, not the desk itself.
A desk looks like a small piece of furniture on paper, but it never stands alone: it comes with a chair, the space to push that chair back, and often a walkway behind it. That is why a 120 cm desk really claims about two meters of room depth once you plan it properly. Below are the real dimensions for each desk type, plus the clearances that make a workspace usable.
All measurements are approximate. Actual dimensions vary by manufacturer; always verify with the product spec before buying. These figures are intended for room planning, not purchasing decisions.
Desk dimensions by type
| Type | Metric | Imperial | Notes |
|---|---|---|---|
| Compact / small desk | W: 90–110 cm · D: 50–60 cm · H: 72–76 cm | W: 35–43 in · D: 20–24 in · H: 28–30 in | Laptop work, bedroom corners |
| Standard home office desk | W: 120–140 cm · D: 60–70 cm · H: 72–76 cm | W: 47–55 in · D: 24–28 in · H: 28–30 in | |
| Large desk | W: 150–180 cm · D: 70–80 cm · H: 72–76 cm | W: 59–71 in · D: 28–31 in · H: 28–30 in | Dual monitors, paperwork |
| Writing desk | W: 100–120 cm · D: 50–60 cm · H: 72–76 cm | W: 39–47 in · D: 20–24 in · H: 28–30 in | Shallow, no monitor |
| Corner / L-shaped desk | Legs: 140–180 cm each · D: 60–80 cm | Legs: 55–71 in each · D: 24–31 in | Measure both legs separately |
| Gaming desk | W: 140–180 cm · D: 70–80 cm · H: 72–76 cm | W: 55–71 in · D: 28–31 in · H: 28–30 in | Depth matters for big screens |
| Sit-stand desk | W: 120–180 cm · D: 70–80 cm · H: 65–125 cm | W: 47–71 in · D: 28–31 in · H: 26–49 in | Height adjusts; footprint as standard |
Desk height: why almost every desk is the same
Fixed desk height barely varies: 72–76 cm (28–30 in) covers nearly everything sold. The adjustment is meant to happen in the chair, not the desk. That standard height works for most people between roughly 160 and 190 cm (5 ft 3 in and 6 ft 3 in) tall. If you are outside that range, a sit-stand frame, typically adjustable between 65 and 125 cm (26 and 49 in), is the easier fix.
For a floor plan, height only matters near windows and radiators: a 74 cm (29 in) desktop sits just below most windowsills, which is exactly why the spot under the window is such a popular desk position.
Depth: 60 cm for a laptop, 70+ for a monitor
Depth is the dimension that decides how the desk is used. At 50–60 cm (20–24 in) there is room for a laptop or writing, but a monitor ends up too close to your eyes. With a screen on the desk you want an arm's-length viewing distance of 50–75 cm (20–30 in), which in practice means a 70–80 cm (28–31 in) deep desktop. Under the desk, keep a knee space of at least 60 cm (24 in) wide and 45–60 cm (18–24 in) deep free of drawers and supports.
Space to leave around a desk
The desk itself is the small part. The chair zone behind it is what actually determines whether the workspace fits in the room.
| Situation | Minimum | Comfortable |
|---|---|---|
| Chair space behind the desk | 75 cm / 30 in | 90–100 cm / 36–39 in |
| Walkway behind the chair | +60 cm / 24 in | +90 cm / 36 in |
| Knee space under the desk (width) | 60 cm / 24 in | 75 cm / 30 in |
| Side clearance to open a drawer unit | 45 cm / 18 in | 60 cm / 24 in |
| Monitor to eyes (on the desktop) | 50 cm / 20 in | 60–75 cm / 24–30 in |
Put together: a desk that doubles as a passage needs about 135–150 cm (53–59 in) of floor depth from the front edge of the desk to the wall behind the chair. In a bedroom, where the desk usually faces a wall and nobody passes behind it, the 75 cm (30 in) minimum chair zone is often enough. The furniture clearance guide covers the walkway rules for the rest of the room.
Planning with real dimensions
Once you have the numbers, the next step is placing the desk in your room to see whether the chair zone survives contact with the bed, the wardrobe, and the door swing. Upload your floor plan image to Layoutr, click two points on the plan with a known real-world distance between them, and the tool sets the scale automatically. From there, drag a desk at its real dimensions onto the plan and see exactly how much space it takes and what is left around it, before ordering or moving anything.
Frequently asked questions
What is the standard desk height?
Standard desk height is 72–76 cm (28–30 in). Nearly every fixed-height desk falls in that band. It suits most people between roughly 160 and 190 cm (5 ft 3 in and 6 ft 3 in) tall when paired with an adjustable chair. Sit-stand desks adjust across roughly 65–125 cm (26–49 in) to cover both sitting and standing.
How deep should a desk be?
A desk should be at least 60 cm (24 in) deep for laptop work, and 70–80 cm (28–31 in) if a monitor sits on it. The extra depth keeps the screen at a comfortable arm's-length viewing distance of 50–75 cm (20–30 in). Writing desks can be shallower at 50–60 cm (20–24 in).
How much space do you need behind a desk?
Leave at least 75 cm (30 in) between the desk edge and the wall for the chair, and 90–100 cm (36–39 in) to sit down and stand up comfortably. If people also walk behind the chair, add another 60 cm (24 in), so plan roughly 135–150 cm (53–59 in) from the desk edge in total.
What size desk do I need for a home office?
For most home offices a desk of 120–140 cm (47–55 in) wide and 60–70 cm (24–28 in) deep is enough for a monitor, keyboard, and some paperwork. In a small room or a bedroom corner, a compact 100 × 50 cm (39 × 20 in) desk still works for laptop-based work.
How wide should a desk be for two monitors?
Plan at least 140 cm (55 in) of desk width for two monitors. Two 24-inch monitors side by side are about 110 cm (43 in) wide together, and two 27-inch monitors about 123 cm (48 in), before leaving any margin at the sides. A 160 cm (63 in) desk gives a comfortable dual setup.
Can I plan a desk on my own floor plan?
Yes. In a tool like Layoutr, you set the real-world scale from your floor plan image, then place a desk at its true dimensions to check the chair space behind it and the walkways around it, before you buy or move anything.
Put the sizes to work on your actual floor plan
Upload your floor plan, set the scale in two clicks, and place a desk at true real-world dimensions. Free to use, no account required.
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