For anyone who spends several hours a day at a computer, a desk is less a piece of furniture than a tool. A badly sized tool quietly adds fatigue: shoulders creep up, the neck leans forward, eyes turn red by evening. Many of these problems can be solved in advance with a few simple measurements when the desk is ordered.
Height starts at the elbow
The right desk height is set by the elbow of the seated user. With shoulders relaxed and arms hanging loosely by the body, the elbow bends at roughly a right angle. The top of the keyboard should sit at that elbow level or slightly below. If the desk is higher, the shoulders lift without the user noticing; if it is lower, the user leans forward.
Standard desks are designed around an average adult and usually fall within 72–75 cm. When people of different heights share a desk, it is more practical to keep the desk at a fixed height and adjust the chair. A shorter user may then need a footrest so the feet do not dangle.
Depth sets the monitor distance
Desk depth is often treated as a purely visual choice, yet it decides how far the eyes are from the screen. The common guideline is to place the monitor at roughly arm's length. On a shallow desk a large monitor ends up too close, so the user pushes the chair back and then has to reach for the keyboard.
If one or two wide monitors will be used, either increase the depth or mount the screens on an arm fixed to the wall or the back edge of the desk. An arm lets you set both distance and height freely and clears the desktop.
Monitor height and angle
When the top edge of the screen is at eye level or slightly below, the gaze falls naturally downward and the neck stays straight. Laptop users usually have the opposite problem: the screen is far too low. Raising the laptop on a stand and using a separate keyboard and mouse solves it.
Placing the monitor at right angles to the window reduces reflections and glare. A screen with its back to the window has to compete with a bright background all day.
Matching the chair to the desk
Desk height cannot be considered apart from the chair. Set the seat so that the feet rest flat on the floor and the thighs are roughly horizontal, then check where the elbows fall relative to the desktop. Armrests should not be higher than the desk edge, or the chair will not pull in close and the user will end up reaching forward.
Also measure the gap between the seat and the rail under the desktop. On some desks a deep front rail sits so low that the thighs touch it once the chair is raised. This is a particular problem for tall users, and it is easily solved when ordering by choosing a design with a slim rail or none at all.
Legroom under the desk
Ergonomics does not stop at the desktop. The knees of a seated user should not hit a drawer unit, a rail or a cable tray. There must be enough clear space underneath to stretch the legs and pull the chair in close. A drawer pedestal is usually placed to one side, often on castors, so it can be rolled away when needed.
A pull-out keyboard tray saves space on narrow desks, but it often reduces knee clearance and leaves no room for the mouse. Check the dimensions against a real seated position before choosing one.
Checklist at your desk
Before ordering a new desk, check these points at your current workstation:
- Elbows are at roughly a right angle over the keyboard and shoulders are not raised.
- Soles of both feet on the floor, or on a footrest if the seat is high.
- The top of the screen is at eye level or a little below.
- The monitor is about an arm's length away.
- There is clearance between the knees and anything under the desk.
- Frequently used items are within reach without stretching.
Write the measurements down and bring them when ordering. This kind of information is exactly where made-to-measure furniture shows its value.
Zaferoglu Mebel makes desks for offices and homes to individual dimensions. When the user's height, the number of monitors and the shape of the room are known in advance, the desk can be planned around those conditions.
