Working from home for eight or more hours a day puts your body in the same position for long stretches, and small misalignments add up. A workspace that fits you, rather than one you contort yourself to fit, is the single best thing you can do to stay comfortable and focused. This guide walks the full ergonomic chain from the floor up: chair, desk, screen, input devices, lighting, and the movement that ties it all together. Treat it as a hub. When you want to go deeper on any one piece, there are linked guides throughout.

A quick note before we start: this is general ergonomics information, not medical advice. Good positioning reduces strain for most people, but if you have persistent pain, numbness, or tingling, see a clinician rather than self-diagnosing from a web page.

Start with the chair: your foundation

Your chair sets the position of everything above it, so dial it in first. Adjust seat height until your feet rest flat on the floor and your knees bend at roughly 90 degrees, with your thighs parallel to the ground or angled very slightly down. If your seat is too high, your feet dangle and pressure builds under your thighs; too low, and your knees rise above your hips, which rounds the lower back.

Aim for a small gap (two to three finger-widths) between the front edge of the seat and the back of your knees. That keeps the seat from pressing into the soft tissue behind your knees and restricting circulation.

Lumbar support is the other half of chair fit. Your lower back has a natural inward curve, and a good chair supports it so you are not constantly holding the curve with muscle effort. Position the lumbar support so it meets the small of your back, then set the recline so you can lean back slightly (around 100 to 110 degrees) rather than perching bolt upright. Upright-at-90-degrees feels disciplined but loads the spine more than a gentle recline.

If your current chair fights you on lumbar support and you mostly notice it as lower-back ache, the dedicated roundup of best ergonomic office chairs for lower-back pain covers what to look for and which features actually matter.

Desk height and the 90-degree elbow

With the chair set, the desk has one main job: let your elbows sit at roughly a 90-degree angle when your hands are on the keyboard, with your forearms parallel to the floor and your shoulders relaxed, not hiked up toward your ears. If you find yourself shrugging to reach the keys, the desk is too high. If your wrists angle up to reach it, it may be too low or the chair too low.

Most fixed desks are built around a standing-height-of-the-average-person assumption, which means they are too tall for a lot of people once the chair is set correctly for the feet. There are two honest fixes. The cheaper one is to keep the desk and raise the chair, then add a footrest (more on that below). The more flexible one is a height-adjustable desk you can tune to your exact elbow height and also raise to stand.

If a sit-stand desk is on your list, two starting points help: a budget-minded survey of the best standing desks under $300, and a head-to-head of two popular mid-range frames in Uplift V2 vs FlexiSpot E7. Buying a desk does not automatically fix posture, though; the habits matter as much as the hardware, which is why how to actually use a sit-stand desk exists as its own guide. And if you ever press the up button and nothing happens, the troubleshooting walkthrough for when your standing desk won’t go up covers the usual culprits.

Monitor height and distance

Once the desk supports your arms, raise your eyes to the screen instead of dropping your head to it. The top of the monitor should sit at or just below eye level so your gaze falls naturally a little downward into the center of the screen. When the screen is too low, you tip your head forward, and the weight of your head pulls on your neck and upper back all day. This is the most common single mistake in home setups, usually because a laptop screen sits flat on the desk.

Distance matters too. Place the monitor about an arm’s length away (roughly 50 to 70 cm for many people) and adjust from there based on text size and your eyesight. Too close strains your eyes; too far and you lean in, undoing your chair setup.

Laptop users face a built-in conflict: if the screen is at eye level, the keyboard is too high, and if the keyboard is comfortable, the screen is too low. The fix is to raise the laptop on a stand and use a separate keyboard and mouse, or to dock the laptop and use an external monitor. A monitor arm frees up desk space and makes height and distance trivially adjustable; the survey of best monitor arms covers clamp styles and weight ratings. If you run two screens, positioning them well is its own small skill, covered in how to set up dual monitors ergonomically.

Keyboard and mouse: keep wrists neutral

Your wrists should stay in a neutral, roughly straight line from forearm to hand, not bent up, down, or off to the sides. Keep the keyboard directly in front of you and close enough that your elbows stay near your sides; reaching forward for it pulls your shoulders and arms out of position. Many keyboards have flip-out feet that tilt the back up, which actually bends the wrists upward; for most people, leaving the keyboard flat or even slightly negatively tilted (front edge higher) keeps the wrists straighter.

Put the mouse right next to the keyboard at the same height so you are not reaching for it. Move it from the elbow and shoulder rather than pivoting at the wrist, and let your hand rest lightly rather than gripping. A wrist rest is for resting between bursts of typing, not for parking your wrists on while you type.

If your hands, wrists, or forearms already ache, tingle, or feel weak by the end of the day, adjust the setup first and read the focused guide on how to fix wrist and forearm pain at your desk for positioning tweaks and warning signs worth taking to a clinician.

Feet, lighting, and glare

If raising your chair to get the elbow angle right leaves your feet dangling, add a footrest (a sturdy box or a stack of books works in a pinch) so your feet are supported and your knees stay near 90 degrees. Supported feet take pressure off the back of your thighs and help you sit back into the lumbar support.

Lighting is the quietly underrated piece. Position your monitor perpendicular to windows rather than facing or backing onto them, so daylight does not glare off the screen or sit as a bright source behind it that your eyes have to fight. Aim for even, moderate ambient light plus a task light for paperwork, and match the screen brightness roughly to the room so your eyes are not jumping between a dim room and a bright panel. If you see reflections on the screen, reposition the screen or the light before reaching for a glossy fix.

Movement and breaks: the part the gear can’t do

No position is good if you hold it for hours, and that includes a perfect one. The best posture is your next posture. Build movement into the day: shift between sitting and standing if you have the option, stand up and walk for a minute or two every half hour or so, and let your eyes rest by looking at something far away periodically (a common habit is the 20-20-20 idea, glancing about 20 feet away for around 20 seconds every 20 minutes). Short, frequent breaks beat one long one. Setting a gentle timer until the rhythm becomes automatic helps more than willpower.

If you are assembling a whole workspace from scratch and want a coordinated starting point rather than buying piece by piece, the worked example for how to build a full setup under $500 prioritizes the pieces that matter most when the budget is tight.

The ideal-angles checklist

Use this as a quick self-audit. Sit the way you normally work, then run down the list:

  • Elbows bent at about 90 degrees, forearms parallel to the floor, shoulders relaxed
  • Knees bent at about 90 degrees, thighs parallel to the floor or angled slightly down
  • Feet flat on the floor or on a footrest
  • Hips back in the seat, lower back supported, chair reclined slightly (about 100 to 110 degrees)
  • Wrists straight and neutral, keyboard flat and close, mouse beside it at the same height
  • Top of the monitor at or just below eye level, about an arm’s length away
  • Screen positioned to avoid window glare, brightness matched to the room
  • A small gap behind the knees, no pressure on the backs of the thighs
  • A plan to move: change position and stand up regularly rather than sitting still for hours

If most of those line up, you have done the hard part. From here, the linked guides go deeper on whichever piece you want to upgrade next, whether that is a chair that finally supports your back, a desk you can stand at, or simply a screen at the right height. Make one change at a time, give it a few days, and notice what your body tells you.

A note: this guide describes general ergonomic principles, not specific medical guidance, and any prices or product details in the linked guides should be confirmed against current listings before you buy.