Improving your ergonomics comes down to aligning your body in neutral positions, placing your equipment at the right heights and distances, and building movement into your day. Most people only think about their chair, but a truly ergonomic setup involves your monitor, keyboard, lighting, feet, and even how often you look away from the screen. Here’s how to get each piece right.
Set Your Chair Height First
Your chair is the anchor for everything else, so start here. Sit with your feet flat on the floor and your knees bent at roughly 90 degrees. Your thighs should be parallel to the ground or angled very slightly downward. If your feet dangle or your toes barely touch the floor, raise the chair until your elbows reach the right height (more on that below), then add a footrest to bridge the gap. A common guideline is that a footrest should be about 10% of your total height, so someone who is 5’8″ would look for a footrest around 6.8 inches tall.
Once seat height is right, adjust your armrests. Let your arms hang loosely at your sides, bend your elbows to about 90 degrees, and raise the armrests until they just barely touch the undersides of your elbows. They should support your forearms without pushing your shoulders upward. If your armrests force your shoulders to shrug even slightly, they’re too high.
Position Your Monitor at the Right Height and Distance
The top edge of your screen should sit at or just below your eye level. This lets you read the center of the screen with a slight downward gaze, which reduces strain on your neck and keeps your head balanced over your spine rather than tilting forward. If you wear bifocals or progressive lenses, you may need the monitor a bit lower so you can read through the correct part of your glasses without tipping your head back.
Distance matters just as much as height. OSHA recommends keeping the screen between 20 and 40 inches from your eyes. A simple test: sit back in your chair and extend your arm. Your fingertips should land somewhere near the screen’s surface. If you find yourself leaning forward to read, increase the font size rather than pulling the monitor closer.
Keep Your Keyboard Below Elbow Height
This is the detail most people get wrong. Research from Cornell University’s ergonomics program shows that the ideal typing position places the keyboard below your seated elbow height, with the keyboard base gently sloped away from you (the opposite of how most keyboard feet are designed). In this position, your wrists stay neutral, meaning they’re not bent upward, downward, or to either side.
When a keyboard sits on a standard desk surface, your forearms tend to sag over time, bending your wrists upward into extension. A keyboard tray that mounts below the desk solves this by letting you type with your elbows at your sides and your forearms angled slightly downward. Your mouse should sit on the same surface and at the same height as your keyboard, close enough that you don’t have to reach for it.
Fix Your Lighting Before Blaming Your Eyes
Eye strain often has less to do with your screen and more to do with the light around it. For offices using LCD monitors, OSHA recommends ambient lighting up to about 73 foot-candles, which is moderate, roughly the brightness of a well-lit living room. Too much overhead light or uncontrolled daylight creates glare on the screen and forces your eyes to constantly adjust between bright and dark areas.
The single most effective fix is orienting your screen at right angles to any windows. If a window is behind you, light hits the screen directly and creates glare. If a window is in front of you, the brightness behind the monitor strains your eyes. Position the screen so windows are to your left or right side instead. Use blinds to soften incoming light without blocking it entirely. Vertical blinds work best for east- and west-facing windows, while horizontal blinds are better for north- and south-facing ones.
Use the 20-20-20 Rule for Eye Breaks
Every 20 minutes, look at something at least 20 feet away for 20 seconds. It sounds almost too simple, but a controlled study published in Contact Lens and Anterior Eye found that following this rule with regular reminders reduced both digital eye strain symptoms and dry eye symptoms in participants. The catch: the benefits faded within a week after people stopped taking the breaks, which means consistency matters more than perfection. Setting a recurring timer or using a browser extension that prompts you is the most reliable way to build the habit.
Alternate Between Sitting and Standing
If you have a sit-stand desk, the research points to standing for at least 30 minutes out of every hour to see health benefits. The commonly cited ideal ratio falls between 1:1 and 3:1 (standing to sitting). In practical terms for an eight-hour day, that means standing for roughly 45 minutes of each hour and sitting for 15, then taking a short movement break before the next cycle.
That said, standing all day creates its own problems, including foot pain, leg fatigue, and lower back compression. The real goal isn’t maximizing standing time. It’s changing positions frequently. If you don’t have a height-adjustable desk, you can get many of the same benefits by standing during phone calls, walking to a colleague’s desk instead of sending a message, or taking a five-minute walk every hour.
Laptop Users Need a Different Setup
Laptops are inherently un-ergonomic. The screen and keyboard are attached, so if the screen is at the right height, the keyboard is too high, and if the keyboard is at a comfortable height, you’re hunching over to see the screen. Using a laptop flat on a desk for hours at a time forces your neck into a forward, downward position that strains the muscles running from your shoulders to the base of your skull.
The fix is to separate the screen from the input devices. Place the laptop on a stand or riser so the top of the screen reaches eye level, then plug in an external keyboard and mouse that you position at or below elbow height. This one change eliminates the forced tradeoff and lets you follow the same positioning guidelines as a desktop setup. If you travel frequently, even a portable laptop stand and a compact external keyboard make a significant difference compared to working off the built-in keyboard on a flat surface.
Small Adjustments That Add Up
Beyond the big items, a few smaller details are worth checking. Your phone should be within easy reach on your dominant side so you’re not cradling it between your ear and shoulder. If you reference paper documents while typing, a document holder placed next to the monitor at the same height and distance keeps you from repeatedly looking down and twisting your neck. And if your chair has a lumbar support adjustment, position it so it fits the natural inward curve of your lower back, not pressing into your mid-back or sitting below your belt line.
Ergonomics isn’t a one-time project. Your body changes throughout the day as muscles fatigue, and your setup needs may shift if you change tasks, switch monitors, or start wearing new glasses. Revisit your positioning every few months, or any time you notice new tension in your neck, shoulders, wrists, or lower back. The best ergonomic setup is one you actually maintain.