The stand that comes with a monitor is built to fit in a small box, not to put the screen where your body wants it. A monitor arm is a cheap, popular upgrade: it frees up desk space, lets you set the screen at the right height, and looks tidier. There is a bit more to picking one than just whether it can hold the weight.
Get the position right first
- Set the top of the screen at, or just below, eye level. Your eyes rest naturally looking slightly downward, so the middle of the screen should sit there.
- Keep the screen about an arm's length away, roughly 50 to 70 cm.
- Face the screen straight on, so you are not turning or tilting your head.
- On big or ultrawide screens, angle it inward a touch so the edges are not farther from your eyes than the center.
VESA: the mounting pattern
VESA is just the standard set of four screw holes on the back of a monitor. The pattern is measured in millimeters, and it tells you which arms will fit.
| VESA pattern | Typical monitor size |
|---|---|
| 75 by 75 mm | 13 to 24 inch |
| 100 by 100 mm | 21 to 32 inch (most gaming monitors) |
| 200 by 100 mm | 27 to 34 inch |
| 200 by 200 mm and larger | 32 inch and up, and TVs |
Some monitors, especially certain curved and Samsung models, do not have VESA holes and need an adapter sold separately. Always check before buying an arm.
Types of arm
- Gas-spring arms
- Use a gas cylinder to balance the monitor's weight, so you can move it with one hand and it stays put. The best kind for easy adjusting. Examples: Ergotron LX, Humanscale M2.
- Mechanical-spring arms
- Use coil springs instead of gas. Cheaper and fine, just a little less smooth. Examples: Vivo, Huanuo.
- Fixed-height pole mounts
- The monitor clamps to a pole at a set height. Cheapest and very stable, but awkward to readjust. Good if you never move the screen.
- Wall mounts
- Bolt to the wall for maximum desk space, with the least flexibility. Needs a stud or proper wall anchors.
Check the weight rating (people skip this)
Every arm has a weight range, not just a maximum. Too light a monitor and the arm drifts upward; too heavy and it sags. Find your monitor's weight without its stand (the manual lists it, sometimes as panel weight) and pick an arm that fits comfortably inside its range.
| Monitor | Weight without stand | Arm range to look for |
|---|---|---|
| 27 inch 1440p | About 5 kg | Roughly 2 to 7 kg |
| 32 inch 4K | About 7 kg | Roughly 5 to 9 kg |
| 34 inch ultrawide | About 7 to 8 kg | Roughly 5 to 11 kg |
| 49 inch super-ultrawide | About 12 to 15 kg | A heavy-duty arm rated for it |
How it attaches to the desk
- Clamp mount
- A clamp grips the back edge of your desk. No drilling, easy to install. Needs a reachable back edge.
- Grommet mount
- A bolt goes through a hole in the desk for a cleaner look. Needs an existing hole or some drilling.
Adjustments worth having
- Height: enough up-and-down travel to set the screen at eye level, ideally 200 mm or more.
- Tilt: to angle the screen slightly up or down.
- Swivel: to turn the screen, handy for showing someone else.
- Rotation: to flip the screen to portrait, useful for reading or coding.
- Reach: how far the screen sits from the desk edge. 400 to 500 mm suits most desks.
Holding two or three monitors
Multi-monitor arms hold several screens on one base, which saves desk space and keeps them lined up. A couple of things to keep in mind.
- Total weight adds up fast. Two 7 kg monitors put 14 kg on one clamp, so cheap arms can flex.
- Better arms let each screen move on its own; cheaper ones share one height.
A simple buying guide
| Budget | Good pick | Notes |
|---|---|---|
| Under $40 | Vivo or Huanuo single | Mechanical spring. Fine for a 24 to 27 inch monitor. |
| $80 to 150 | NB North Bayou F80, Amazon Basics Premium | Gas spring. Solid for mid-weight monitors. |
| $180 to 250 | Ergotron LX | The industry standard, with a long warranty. Will outlast your monitor. |
| $300 and up | Humanscale, Herman Miller Flo | Premium build for serious setups. |