"What is Monitor Arm?"

"A monitor arm frees your display from its stand, letting you adjust height, angle, and depth at will. Learn about VESA standards, arm types, and buying tips."

Monitor Arms Explained: VESA Mounting, Types, and How to Pick the Right One

What is a Monitor Arm?

A monitor arm is a mounting accessory that lifts your display off its default stand and holds it in the air, giving you full control over its height, angle, depth, and rotation. Instead of being stuck with whatever position the stock stand allows, you can place your screen exactly where your eyes need it to be.

Beyond ergonomics, monitor arms reclaim valuable desk space. That bulky stand base disappears, freeing up room for your keyboard, notebook, or coffee mug. For anyone who works at a desk for hours each day, a monitor arm is one of the most impactful upgrades you can make – it’s up there with a good chair.

In-Depth

Why Use a Monitor Arm?

Better posture: Positioning your monitor at eye level reduces strain on your neck and shoulders. This sounds like a small thing until you’ve spent eight hours hunched over a screen that’s too low.
Reclaimed desk space: Without a stand eating up your desk, you get significantly more usable surface area.
Flexible positioning: Pull the screen closer for detail work, push it back when you want a wider view, swivel it to share your screen with a colleague – all effortlessly.
Dual-monitor setups: Two monitors side by side with minimal gap is much easier to achieve with arms than with stands, where bases compete for desk real estate.

VESA Mounting: The Universal Standard

Monitor arms and monitors connect through the VESA mounting standard – a set of screw hole patterns on the back of the monitor.

VESA Pattern	Hole Spacing	Typical Monitor Size
75x75mm	75mm	Up to 24 inches
100x100mm	100mm	24-32 inches
200x200mm	200mm	Large/commercial displays

Before buying an arm, confirm two things: that your monitor has VESA-compatible mounting holes, and what size pattern it uses. Some monitors (especially all-in-one PCs like the iMac) don’t support VESA mounting without an adapter.

Types of Monitor Arms

Gas spring (pneumatic): A gas cylinder counterbalances the monitor’s weight, making adjustments smooth and nearly effortless. This is the most popular type and the one most people should buy.
Mechanical spring: Uses a metal spring instead of gas. Tends to be more durable over the long term since gas cylinders can slowly lose pressure after several years.
Fixed mount (including wall mounts): Set it once and forget it. Cheaper and simpler, ideal when you don’t need frequent adjustments.
Pole mount: Monitors attach to a vertical pole clamped to the desk. Good for stacking monitors vertically or mounting three or more displays.

Weight Capacity: The Spec That Matters Most

The single most important spec when choosing a monitor arm is its weight capacity range. Your monitor’s weight (without the stock stand) needs to fall within the arm’s supported range. If the monitor is too light, the arm won’t hold it down properly and it’ll float upward. Too heavy, and it’ll sag or droop.

Ideally, your monitor’s weight should land somewhere in the middle of the arm’s supported range – this gives the spring or gas mechanism the best balance.

How to Choose

1. Check your monitor’s weight and VESA pattern

Start by looking up your monitor’s weight (without stand) and its VESA mount size. These two numbers narrow your options immediately. If your monitor weighs 6kg, look for an arm rated for roughly 3-9kg.

2. Decide on desk attachment method

Most arms use either a clamp (grips the edge of your desk) or a grommet (bolts through a hole in the desk). Clamps are more common and easier to install. Check your desk’s thickness and material – glass desktops, for instance, usually can’t support clamp-mounted arms.

3. Single arm or dual arm?

If you’re running two monitors, a dual arm (two arms branching from a single pole) saves space compared to two separate arms. Just make sure the arm’s weight capacity covers both monitors combined. Running an ultrawide monitor? You’ll want a single arm with a higher weight rating instead.

The Bottom Line

A monitor arm gives you ergonomic freedom and a cleaner desk in one upgrade. Check your monitor’s weight and VESA compatibility, pick the right mounting style for your desk, and you’re set. It’s a simple change that makes a big daily difference.