Standard Desk Height and Desk Size: The Numbers That Matter

Standard desk height is the one measurement nobody checks until the desk is already in the room. I build desks to order in my Somerset workshop, and the question I get asked most often is not about wood or finish. It is about height, and whether 74cm is going to be right. So here are the actual numbers I work to, how to tell whether they suit you, and the two other dimensions that matter more than most people expect.

What the standard desk height actually is

The figure most of the furniture trade settles on is somewhere between 72cm and 75cm from the floor to the top of the work surface. It is not a law, just a long-standing average that fits a lot of adults reasonably well and nobody perfectly.

My steel legs are 71cm. Put a 32mm top on them, which is my standard thickness, and the finished desk comes out at 74.2cm. Choose the 40mm top instead and you land at 75cm. That 8mm difference sounds trivial written down, and in practice it is, but it is worth knowing if you are matching a desk to a chair you already own.

If you want the short answer: 74cm is the number to plan around, and anything within a centimetre or two of it will feel the same once you are sitting down.

How to work out the right height for you

There is a simple test that costs nothing. Sit on the chair you actually use, feet flat on the floor, upper arms hanging straight down, forearms level. Measure from the floor to the underside of your forearm. That is roughly where your desk surface wants to be.

For most people between about 5ft 6in and 6ft, that measurement lands close to 74cm, which is why the standard works as well as it does. If you are taller than that, you will probably measure 76cm to 79cm and a standard desk will have you reaching slightly down and forward all day. Shorter and you may measure 68cm to 72cm, in which case your shoulders creep up to meet the surface.

Two honest caveats. First, your chair matters more than your desk. A chair with proper height adjustment solves most of this for free, and raising the chair then using a footrest is a perfectly good fix. Second, if you measure something well outside the normal range, tell me when you order and I will build the legs to suit rather than selling you a desk you have to work around.

Desk depth: the number people get wrong

Height gets the attention, but depth is the dimension that decides whether a desk feels comfortable or cramped, and it is the one most often chosen badly.

Depth is the front to back measurement. The reason it matters is screen distance. A monitor wants to sit roughly an arm's length away, and you cannot get there on a shallow desk without pushing the screen off the back edge.

Here is how the numbers play out in practice. At 50cm you have room for a laptop and a mug and that is it, which is fine for a desk in a hallway or a spare corner you use twice a week. At 60cm a single monitor works, though the viewing distance is tighter than ideal. At 70cm everything sits where it should, and this is the depth I would pick if someone asked me to choose for them. At 80cm and above you have genuine space in front of the keyboard, which is worth having if you draw, write by hand, or spread paperwork out.

My pine desks run from 50cm to 90cm deep. The oak and walnut desks run from 50cm to 80cm, in 5cm steps, so you can take the middle ground at 65cm or 75cm if your alcove demands it.

Standard desk size by width, and what each one actually holds

Width is the easiest dimension to get right because you can see it. Measure the wall, take off a bit for clearance either side, and that is your ceiling.

What each width gives you:

80cm to 100cm. Laptop territory. One screen, nothing either side of it. Good where the desk has to tuck into a small room and not dominate it.

110cm to 130cm. The most common size I make. Single monitor, keyboard, lamp, and room for a notebook without shuffling things around.

140cm to 160cm. Comfortable for two screens. A pair of 27in monitors side by side eats about 120cm before you allow any elbow room, so 150cm is the realistic floor for a dual setup rather than 140cm.

170cm to 200cm. A full wall of surface. Lovely if you have the room and genuinely use it. If you do not, a 200cm desk mostly becomes a shelf for things you have not put away, and I would rather sell you a smaller one.

Everything in my desk range goes from 80cm to 200cm wide, and the sizes between the listed steps are available too. There is no surcharge for an odd number, because the price follows the size and not whether the measurement is tidy.

Where the thickness of the top fits in

The top is part of the height, which is obvious once you say it out loud and easy to forget when you are comparing desks online. A 32mm solid top and a 40mm solid top on the same legs give you two different desks by 8mm.

Thickness is worth thinking about for its own sake as well. A 32mm top in solid pine, oak or walnut is already stiff enough that it will not flex under a monitor arm clamped to the back edge. Going to 40mm buys you a chunkier look and a bit more mass, and it costs more. It does not make the desk meaningfully stronger for normal use, so choose it because you like how it looks rather than because you are worried about sag.

When a fixed height is the wrong answer

This is the part a furniture maker is supposed to skip. If you want to change your desk height during the day, a fixed-height desk is simply not the right purchase, and no amount of choosing the number carefully will fix that. A sit-stand frame will.

Which is why every desk I make can be ordered as a top on its own. Pick the "Desktop no legs" option and you get the solid wood surface cut to your size, with no legs, screws or fittings, ready to bolt to a frame you have already bought. Plenty of people come to me for exactly that, and it is a sensible thing to do.

If you do want the whole desk from me, the choice comes down to material. The pine Bruton desk is the affordable one, finished in Osmo Wood Wax, and a complete desk starts at £235. The oak and walnut desks are the Halse and the Wedmore, both finished in Osmo Polyx-Oil, and a complete desk in either starts at £745. That is a real gap, and it is honest to say that the pine desk does the same job. What you are buying with hardwood is hardness, grain and a surface that will take forty years of use rather than twenty.

If you want a screen riser built in rather than bolted on, the Somerton has one as part of the desk, from £330. Worth knowing that a built-in shelf raises the screen but also fixes its position, so it suits a settled setup more than a changing one.

The short version

Plan for a desk height of about 74cm, check it against your own forearm measurement, and sort your chair out before you blame the desk. Choose 70cm depth unless the room will not take it. Choose width by what goes on the surface, not by what looks generous in a photograph.

And if the numbers you end up with do not match anything on sale, that is the whole reason I build to order. I have written more on matching a desk to a particular room in my guide to choosing the right desk size for your home office, which goes further on measuring awkward spaces. Measure first, then get in touch, and I will build to the size you actually need.