The best keyboard tray for desk work is one that fits under your desk, slides out far enough to type on, and clamps on without damaging the top. Picture a 9 a.m. call with the keyboard sliding around on a crowded desktop and nowhere for the mouse to go. We compared five clamp-on keyboard trays by tray size, slide extension, max desk thickness, stated weight capacity and item weight, using only what each listing publishes.
OfficeKitHQ earns a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure.
Quick picks
Best Overall UPGRAVITY 31.5 IN TRAY: 31.5 x 11.8 in tray, 9.8 in extension, fits 2.17 in desks, non-slip pad Check price on Amazon
Best Extra Long VIVO MOUNT-KB15EW: 34 x 11 in tray, 11 lb stated capacity, sturdy C-clamps Check price on Amazon
Best Beveled Edge XYNDYX 25.6 IN TRAY: 25.6 x 11.8 in tray with wrist-friendly beveled edge, 7.8 in extension Check price on Amazon
Best Narrow Fit HEMUDU 27.3 IN TRAY: 27.3 x 11 in tray, 11 lb capacity, fits desks to 1.9 in Check price on Amazon
Best Compact ZONTERA 20 IN TRAY: 20 x 11.8 in tray with back baffle, 7.52 lb item weight Check price on Amazon
The picks
| # | Product | Office Score | Buy |
|---|---|---|---|
| 1 | UPGRAVITY 31.5 IN TRAY | 9.6/10 | Buy on Amazon |
| 2 | VIVO MOUNT-KB15EW | 9.5/10 | Buy on Amazon |
| 3 | XYNDYX 25.6 IN TRAY | 9.4/10 | Buy on Amazon |
| 4 | HEMUDU 27.3 IN TRAY | 9.4/10 | Buy on Amazon |
| 5 | ZONTERA 20 IN TRAY | 9.4/10 | Buy on Amazon |

UPGRAVITY 31.5 IN TRAY
A 31.5 by 11.8 in clamp-on tray that extends 9.8 in and fits desks up to 2.17 in thick, with a non-slip EVA pad.
Pros
- 9.8 in extension is the longest here
- Fits desks up to 2.17 in thick, the most here
- Non-slip EVA pad protects the desk from scratches
- 35.8 in clamp-to-clamp length suits wide desks, per the listing
Cons
- Not for desks with beveled edges, per the listing
- 11.92 lb item weight is heavy to position alone
- No warranty term is stated
- Rustic brown finish is the only colorway named
Detailed Review
UPGRAVITY lists this as a 31.5 by 11.8 in tray (35.8 in including clamps) in rustic vintage brown with a slide-out design, sturdy C-clamps and a non-slip EVA pad. The tray extends 9.8 in from the desk edge and fits desks up to 2.17 in thick, both the largest figures here. The listing warns it is not for desktops with beveled edges and notes the center stretcher must sit at least 11.8 in from the desktop edge.
Who it's for: someone with a thick or wide desk who wants the longest extension and a stated anti-slip pad. Who should skip it: anyone with beveled desk edges or anyone who wants a warranty term in writing.
Its Office Score of 9.6/10 comes from performance 32/35, build 21/25, value 20/25, safety 3/10 and warranty 0/5: 76 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Tray size | 31.5 x 11.8 in |
|---|---|
| Extension | 9.8 in |
| Max desk thickness | 2.17 in |
| Item weight | 11.92 lb |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Non-slip EVA pad stated, so safety scores 3 of 10. No warranty term, so warranty scores zero. See How We Pick.
Moving desk, heavy load. Stay under the stated lift or weight capacity, leave slack in every cable, keep children, pets and fingers clear while the desk moves, and treat anti-collision as the maker's claim.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

VIVO MOUNT-KB15EW
A 34 by 11 in clamp-on tray with an 11 lb stated capacity and sturdy C-clamps, for desks up to 1.25 in thick.
Pros
- 34 by 11 in is the largest tray surface here
- Stated 11 lb weight capacity
- Sturdy C-clamps mount without damaging the desk, per the listing
- Slides in and out for typing angles, per the listing
Cons
- 1.25 in maximum desk thickness is the slimmest here
- Not for desktops with beveled edges, per the listing
- 12.7 lb item weight is the heaviest here
- No warranty term is stated
Detailed Review
VIVO lists the MOUNT-KB15EW as a 34 by 11 in white clamp-on tray (39.4 in including clamps) that slides in and out and holds up to 11 lbs. The tray extends 8.5 in from the desk edge and mounts with solid adjustable C-clamps on desks up to 1.25 in thick. The listing says it is not for desktops with beveled edges and asks buyers to confirm 39.4 in of clear space before purchasing.
Who it's for: someone who wants the biggest tray surface and a stated 11 lb capacity. Who should skip it: anyone with a thick desk, beveled edges, or anyone who wants a warranty term in writing.
Its Office Score of 9.5/10 comes from performance 30/35, build 21/25, value 21/25, safety 0/10 and warranty 0/5: 72 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Tray size | 34 x 11 in |
|---|---|
| Extension | 8.5 in |
| Max desk thickness | 1.25 in |
| Item weight | 12.7 lb |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Moving desk, heavy load. Stay under the stated lift or weight capacity, leave slack in every cable, keep children, pets and fingers clear while the desk moves, and treat anti-collision as the maker's claim.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

XYNDYX 25.6 IN TRAY
A 25.6 by 11.8 in clamp-on tray with a wrist-friendly beveled edge and a 7.8 in extension.
Pros
- Wrist-friendly beveled edge stated on the tray
- 25.6 by 11.8 in surface fits a full keyboard and mouse
- 7.8 in extension with a smooth sliding rail system
- 31.5 in clamp-to-clamp length suits mid-size desks, per the listing
Cons
- Requires a flat, unobstructed desk underside, no crossbars
- No maximum desk thickness is stated
- No warranty term is stated
- No stated weight capacity
Detailed Review
Xyndyx lists this as a 25.6 by 11.8 in tray (31.5 in including clamps) with a wrist-friendly beveled edge, an adjustable C-clamp and a smooth sliding rail system. It extends 7.8 in from the desk edge. The listing is strict about fit: only desks with a completely flat, unobstructed underside, with no curved, beveled or rounded edges and no crossbars or support beams underneath.
Who it's for: someone with a flat, simple desk who wants a beveled front edge. Who should skip it: anyone with crossbars under the desk, and anyone who wants a stated weight capacity or warranty term.
Its Office Score of 9.4/10 comes from performance 29/35, build 20/25, value 20/25, safety 0/10 and warranty 0/5: 69 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Tray size | 25.6 x 11.8 in |
|---|---|
| Extension | 7.8 in |
| Clamp-to-clamp | 31.5 in |
| Item weight | 8.53 lb |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Moving desk, heavy load. Stay under the stated lift or weight capacity, leave slack in every cable, keep children, pets and fingers clear while the desk moves, and treat anti-collision as the maker's claim.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

HEMUDU 27.3 IN TRAY
A 27.3 by 11 in clamp-on tray with an 11 lb stated capacity, for desks up to 1.9 in thick.
Pros
- Stated 11 lb weight capacity
- Fits desks up to 1.9 in thick
- Sturdy C-clamps with all hardware included, per the listing
- 32.5 in clamp-to-clamp length, per the listing
Cons
- Bullets say 8.3 in deep while title and spec table say 11 in
- 5.7 in extension is the smallest here
- Not for desktops with beveled edges, per the listing
- No warranty term is stated
Detailed Review
Hemudu lists this as a 27.3 in tray (32.5 in including clamps) with sturdy C-clamps, an 11 lb stated capacity and a 1.9 in maximum desk thickness. The tray extends 5.7 in from the desk edge, the smallest extension here. One contradiction: the bullets give an 8.3 in depth while the title and spec table say 27.3 by 11 in, and we use the title's figure.
Who it's for: someone who wants a stated 11 lb capacity on a mid-thickness desk. Who should skip it: anyone who needs a long extension or a warranty term in writing.
Its Office Score of 9.4/10 comes from performance 28/35, build 20/25, value 20/25, safety 0/10 and warranty 0/5: 68 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Tray size | 27.3 x 11 in |
|---|---|
| Extension | 5.7 in |
| Max desk thickness | 1.9 in |
| Item weight | 8.89 lb |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Moving desk, heavy load. Stay under the stated lift or weight capacity, leave slack in every cable, keep children, pets and fingers clear while the desk moves, and treat anti-collision as the maker's claim.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

ZONTERA 20 IN TRAY
A compact 20 by 11.8 in clamp-on tray with a 7.8 in extension and a back baffle that keeps the keyboard in place.
Pros
- Back baffle keeps the keyboard from sliding, per the listing
- 7.52 lb item weight is the lowest here
- Adjustable dual C-clamps, per the listing
- 7.8 in extension with an upgraded slide mechanism
Cons
- 20 by 11.8 in is the smallest tray surface here
- No maximum desk thickness is stated
- No warranty term is stated
- No stated weight capacity
Detailed Review
Zontera lists this as a 20 by 11.8 in tray (25.9 in including clamps) with adjustable dual C-clamps, a 7.8 in extension and a built-in back baffle that keeps the keyboard from sliding. The listing describes a heavy-duty build with an upgraded slide mechanism for smooth extension and retraction. No maximum desk thickness, weight capacity or warranty term is stated.
Who it's for: someone with a compact setup who wants the lowest stated weight with a keyboard stop. Who should skip it: anyone with a full-size keyboard who needs more surface, or anyone who wants stated capacity and warranty figures.
Its Office Score of 9.4/10 comes from performance 28/35, build 20/25, value 19/25, safety 0/10 and warranty 0/5: 67 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Tray size | 20 x 11.8 in |
|---|---|
| Extension | 7.8 in |
| Clamp-to-clamp | 25.9 in |
| Item weight | 7.52 lb |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Moving desk, heavy load. Stay under the stated lift or weight capacity, leave slack in every cable, keep children, pets and fingers clear while the desk moves, and treat anti-collision as the maker's claim.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
More picks to compare
VIVO Vintage Brown Clamp-on 20 xCheck on Amazon
VIVO Black Under Desk 27 x 11 in KeyboardCheck on Amazon
HUANUO Under Desk Keyboard TrayCheck on Amazon
Strifuture Keyboard Tray Under DeskCheck on Amazon
LLDEPLL Keyboard Tray Under DeskCheck on Amazon
Compare the picks
| Keyboard Tray | Office Score | Tray size | Extension | Max desk thickness | Item weight | Amazon |
|---|---|---|---|---|---|---|
| UPGRAVITY 31.5 IN TRAY | 9.6/10 | 31.5 x 11.8 in | 9.8 in | 2.17 in | 11.92 lb | View on Amazon |
| VIVO MOUNT-KB15EW | 9.5/10 | 34 x 11 in | 8.5 in | 1.25 in | 12.7 lb | View on Amazon |
| XYNDYX 25.6 IN TRAY | 9.4/10 | 25.6 x 11.8 in | 7.8 in | Not stated | 8.53 lb | View on Amazon |
| HEMUDU 27.3 IN TRAY | 9.4/10 | 27.3 x 11 in | 5.7 in | 1.9 in | 8.89 lb | View on Amazon |
| ZONTERA 20 IN TRAY | 9.4/10 | 20 x 11.8 in | 7.8 in | Not stated | 7.52 lb | View on Amazon |
Specifications are manufacturer rated as listed, collected 19 October 2026. None of the five state a warranty term.
How we scored them
The Office Score weighs performance (tray size, extension and clamp fit), build (materials and item weight), value for the stated specs, safety and warranty. For a keyboard tray, safety means a stated anti-slip feature; only the UPGRAVITY lists one, a non-slip EVA pad, so it is the only pick with a safety score above zero. None of the five state a warranty term. How we pick explains the weights.
| Product | Office Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| UPGRAVITY 31.5 IN TRAY | 9.6 | 32 | 21 | 20 | 3 | 0 |
| VIVO MOUNT-KB15EW | 9.5 | 30 | 21 | 21 | 0 | 0 |
| XYNDYX 25.6 IN TRAY | 9.4 | 29 | 20 | 20 | 0 | 0 |
| HEMUDU 27.3 IN TRAY | 9.4 | 28 | 20 | 20 | 0 | 0 |
| ZONTERA 20 IN TRAY | 9.4 | 28 | 20 | 19 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
How to choose the best keyboard tray for desk
Measure the desk before you buy
Every listing here warns about fit, so measure twice. The clamp-to-clamp lengths run 25.9 in on the Zontera, 31.5 in on the Xyndyx, 32.5 in on the Hemudu, 35.8 in on the UPGRAVITY and 39.4 in on the VIVO: you need that much clear space under the desk. Max desk thickness runs 1.25 in on the VIVO, 1.9 in on the Hemudu and 2.17 in on the UPGRAVITY. The VIVO and UPGRAVITY listings say the tray is not for desks with beveled edges, and the Xyndyx needs a flat, unobstructed underside with no crossbars. A tray that does not fit the desk is a return, not a purchase.
Extension and tray size
Extension decides how far the tray comes out to meet you. The UPGRAVITY extends 9.8 in from the desk edge, the VIVO 8.5 in, the Zontera and Xyndyx 7.8 in each, and the Hemudu 5.7 in. Tray surfaces run from 20 by 11.8 in on the Zontera up to 34 by 11 in on the VIVO, with the UPGRAVITY at 31.5 by 11.8 in and the Xyndyx at 25.6 by 11.8 in. If you use a full-size keyboard with a number pad, favor the longer trays; the Hemudu’s 27.3 by 11 in surface suits a compact keyboard and mouse.
| Keyboard Tray | Tray size | Extension | Max desk thickness |
|---|---|---|---|
| UPGRAVITY 31.5 IN TRAY | 31.5 x 11.8 in | 9.8 in | 2.17 in |
| VIVO MOUNT-KB15EW | 34 x 11 in | 8.5 in | 1.25 in |
| XYNDYX 25.6 IN TRAY | 25.6 x 11.8 in | 7.8 in | Not stated |
| HEMUDU 27.3 IN TRAY | 27.3 x 11 in | 5.7 in | 1.9 in |
| ZONTERA 20 IN TRAY | 20 x 11.8 in | 7.8 in | Not stated |
Figures as stated in each listing. For the Hemudu we use the title’s 27.3 by 11 in over the bullets’ 8.3 in depth; the spec table agrees with the title at 27.3 by 11.
Capacity, clamps and small extras
Only two listings state a weight capacity: the VIVO and the Hemudu each hold up to 11 lbs. The UPGRAVITY is the only pick with a stated anti-slip feature, a non-slip EVA pad that protects the desk from scratches. The Zontera adds a back baffle that keeps the keyboard from sliding off. All five mount with C-clamps and include hardware, per the listings, and none state a warranty term. For seating to pair with the new typing height, see our best keyboard for your wrist guide, and check the keyboards section for more input gear.
Setup Notes
- Measure the clear space under the desk against the clamp-to-clamp length: 39.4 in for the VIVO down to 25.9 in for the Zontera.
- Check the desk thickness against the stated maximum: 1.25 in for the VIVO, 1.9 in for the Hemudu, 2.17 in for the UPGRAVITY.
- Plan cable routing before clamping: the trays slide under the desk when not in use, so keep keyboard and mouse cables above the tray’s path.
- Assembly is clamp-on with included hardware, per the listings; no drilling is stated for any of the five.
Frequently Asked Questions
Which tray has the largest surface?
The VIVO at 34 by 11 in, or 39.4 in including clamps. The UPGRAVITY lists 31.5 by 11.8 in, the Hemudu 27.3 by 11 in, the Xyndyx 25.6 by 11.8 in and the Zontera 20 by 11.8 in.
Which tray extends the farthest from the desk?
The UPGRAVITY at 9.8 in from the desk edge. The VIVO extends 8.5 in, the Zontera and Xyndyx 7.8 in each, and the Hemudu 5.7 in.
Do these trays fit thick desks?
The UPGRAVITY states a 2.17 in maximum desk thickness, the Hemudu 1.9 in and the VIVO 1.25 in. The Zontera and Xyndyx state no maximum, so measure and compare against the clamp design.
Do any of these state a warranty term?
No. None of the five listings state a warranty term, so warranty scores zero for the group.
Can I use these on a desk with beveled edges?
The VIVO and UPGRAVITY listings say no to beveled edges, and the Xyndyx requires a flat, unobstructed underside with no crossbars. Check your desk edge before buying.
Related guides
See every keyboards guide and all monitor mounts, keyboards and mice guides. Also see our best keyboard tray for chair. Also see our best keyboard for your wrist.
More picks: keyboard trays for tables, keyboards with trackball, wrist rests for computer.




