What Is a Keyboard Tray and How Do You Use One?

On this page (8 sections)

1. What does a keyboard tray do?
2. How do you use a keyboard tray?
3. Are keyboard trays ergonomic?
4. What should you check before installing a keyboard tray?
5. How much desk space does a keyboard tray need?
6. Can a keyboard tray adjust for sitting and standing?
7. How do you install and care for a keyboard tray?
8. What is the best way to choose a keyboard tray?

A keyboard tray is an under-desk platform that holds your keyboard and mouse. It clears space from the desktop and can help you place your hands at a lower, more comfortable typing position.

Most trays slide beneath the desk when you are done. Some clamp to the desk edge, while others mount with hardware.

Adjustable models can also change height, tilt, or swivel angle.

What does a keyboard tray do?

A keyboard tray moves your keyboard and mouse below the desktop. That can leave more room for a monitor stand, papers, or other small items.

The tray also changes the relationship between your chair, elbows, wrists, and keyboard. The goal is not simply to put the keyboard lower.

You want a position that lets your shoulders relax, your elbows stay near your body, and your wrists avoid a sharp bend.

For a broader look at keyboards, mice, and tray choices, see our keyboards, mice and trays complete buying guide.

How do you use a keyboard tray?

Use a keyboard tray by placing it under the desk, adjusting the keyboard position, and checking your posture while typing. Start with the tray close enough that you do not reach forward.

Set your chair so your feet rest on the floor and your back is supported. Bring the keyboard in front of your body rather than turning toward one side.

Keep your elbows near your sides and let your forearms slope gently toward the keyboard. Your wrists should stay as straight as you can manage without pressing hard into the desk or tray.

Place the mouse beside the keyboard at the same general height. If the tray feels too narrow for both, measure the keyboard and mouse together before changing the hardware.

When you stop typing, slide the tray beneath the desk if its track allows it. This can give your legs and chair more room.

How do you adjust a keyboard tray?

Adjust a keyboard tray until the keyboard is low enough for relaxed shoulders but high enough for easy control. Make small changes instead of forcing your wrists into a fixed angle.

A tilt feature changes the front-to-back angle of the keyboard. A height feature changes the keyboard's position relative to the desk.

A swivel feature turns the tray left or right, which can help when you work at a corner desk or look between screens.

After each adjustment, type for a short period and check for shoulder lifting, elbow pressure, or wrist bending. If your chair cannot move close enough, the tray may be too far beneath the desktop or blocked by the desk frame.

Are keyboard trays ergonomic?

Keyboard trays can be ergonomic when they support a neutral typing position, but the tray itself does not guarantee good posture. Fit and adjustment matter more than the name of the product.

Look for enough clearance for your knees and chair. Check that the keyboard can sit directly in front of you and that the mouse does not force your arm far to the side.

A tray that is too high may keep your shoulders raised. One that is too low may make you bend your wrists upward.

A tray that sits too far away can make you reach forward for every keystroke.

The best ergonomic keyboard trays comparison can help if you want to compare different adjustment styles.

What should you check before installing a keyboard tray?

Before installation, measure the desk edge, desktop thickness, underside clearance, and space around the mounting area. Look for crossbars, legs, drawers, and other supports that could block the tray.

Clamp-on trays need a suitable desk edge and a level underside. A beveled edge or uneven surface may prevent the clamps from securing properly.

VIVO Black Clamp-on 27 x

The VIVO Black Clamp-on 27 x 11 in Keyboard Tray, MOUNT-KB05E has a 26.8 in tray and a 32.5 in total clamp-to-clamp length. It extends up to 8.5 in from the desk edge and holds up to 11 lb.

It uses adjustable C-clamps for desks up to 1.25 in thick. The desk needs a level underside, a clean square edge, and no crossbar or support in the clamp area.

It is not compatible with beveled edges.

Choose it when your desk has enough edge length for the 32.5 in clamp span and you want a tray that slides out up to 8.5 in. Measure first if your desk has legs, supports, or a frame near the front edge.

For a larger clamp-on option, compare the best under-desk keyboard tray choices.

How much desk space does a keyboard tray need?

A keyboard tray needs enough width for your keyboard and mouse plus enough mounting space for the hardware. The tray itself may fit your devices while the clamps or rails do not fit your desk.

Measure the keyboard's widest point, then add room for the mouse. Also measure the distance between desk legs and the available space beneath the desktop.

The VIVO Black Clamp-on 27 x model has a 27 in size label, while its total length including clamps is 32.5 in. Those are different measurements, so use the full clamp-to-clamp length when checking desk space.

VIVO Black Extra Large Clamp-on 34 x

The VIVO Black Extra Large Clamp-on 34 x 11 in Keyboard Tray, MOUNT-KB15EB has a 33.9 in tray and a 39.4 in total clamp-to-clamp length. It holds up to 11 lb and extends up to 8.5 in from the desk edge.

Its adjustable C-clamps fit desks up to 1.25 in thick. The mounting area needs a level underside, a clean square edge, and no crossbar or support where the clamps attach.

It is not compatible with beveled edges.

Choose this model when the extra-long tray suits your setup and your desk has room for the full clamp span. Its larger footprint needs more careful measuring than the 27 in option.

Can a keyboard tray adjust for sitting and standing?

A keyboard tray can work with a standing desk when its height range follows the desk and keeps the keyboard near elbow height. Compare keyboard trays for standing desks if you need one that moves with the desktop.

A fixed tray may become too low or too high when you change from sitting to standing.

The HUANUO tray has 6.3 in of height adjustment. Its lowest connector height is 7.48 in, so measure from the underside of your desktop to the position you need.

HUANUO Under Desk Keyboard Tray

The HUANUO Under Desk Keyboard Tray, 25 x 9.8 Inch Slide-Out Drawer has a 25 x 9.84 in tray for keyboards up to 17.3 x 5.5 in plus mouse space. It includes a wrist rest and slides beneath the desk.

It swivels 180 degrees left and right, tilts 6 degrees up and 22 degrees down, and provides 6.3 in of height adjustment. Installation hardware is included, and the tightening knob should be secured before typing.

Check for at least 14.17 in of clearance from the desk edge to a crossbar, or 16.22 in for full slide-under movement. The desk sides also need to be free of legs and obstacles, with at least 25 in of side clearance, or 35.4 in if you rotate the tray.

The best adjustable keyboard tray for standing desk guide is useful if you need movement across several desk heights.

How do you install and care for a keyboard tray?

Install a keyboard tray only after confirming the desk surface and clearance match its mounting method. Follow the included instructions, keep the tray level, and tighten hardware before placing your keyboard on it.

For a clamp-on model, position both clamps on a clean, square desk edge with a level underside. Keep the intended path clear of crossbars and supports.

For a tray with height, tilt, or swivel adjustments, tighten the control knob before typing. Recheck the position if the tray shifts or if you change from sitting to standing.

Keep the sliding path clear of cables and objects. When choosing between a vertical mouse and trackball, our vertical mouse vs trackball comparison explains how each changes hand movement.

You can also read how to choose an ergonomic mouse for computer use or how to use a Logitech MX Vertical Mouse.

What is the best way to choose a keyboard tray?

Choose a keyboard tray by matching the mounting method, tray size, clearance, and adjustment range to your desk.

Pick the VIVO Black Clamp-on 27 x model when you need a shorter tray and have 32.5 in of clamp space. Pick the VIVO Black Extra Large Clamp-on 34 x model when you need more tray width and have 39.4 in available.

Choose the HUANUO model when sitting-to-standing height adjustment, swivel, tilt, and a wrist rest matter more than a clamp-on design. In every case, measure your desk before installing and keep the keyboard centered in front of you.

A keyboard tray is useful when it puts the keyboard in a better position without blocking your legs. For a fixed keyboard platform, compare the best ergonomic keyboard stands.

Frequently asked questions

What is a keyboard tray?

A keyboard tray is a platform mounted beneath a desk that holds a keyboard and often a mouse. It can free desktop space and position your hands lower than the desktop, while a slide-out design lets you move the tray away when you are not typing.

How do you use a keyboard tray?

Mount the tray where your knees and chair can clear it, then adjust its height, tilt, and distance so your elbows stay close to your sides and your wrists remain fairly straight. Keep the keyboard and mouse centered in front of you and slide the tray away when finished.

Are keyboard trays ergonomic?

Keyboard trays can support a more comfortable setup when they place the keyboard at a suitable height, angle, and distance. They are not automatically ergonomic, so check your posture, desk clearance, chair position, and the tray's adjustment range.

Can you use a keyboard tray with a standing desk?

Yes, if the tray can move with the desktop and has enough height adjustment for both sitting and standing. A fixed under-desk tray may work only at one desk height, while an adjustable model can keep the keyboard closer to elbow height as you change positions.