Ergonomic Home Office Setup

A good ergonomic home office setup costs nothing to begin: most desk discomfort comes from how the furniture is arranged, not which furniture it is. Work through these four steps in this order — each one only makes sense once the one before it is right — and only then decide whether you need to buy anything.

Work in this order — it matters

1. Chair height first, measured against your feet

Sit back fully. Adjust the seat until your feet rest flat on the floor and your knees sit at roughly a right angle, or a little below your hips. Not your toes — your whole foot. If the seat can't go low enough, use a footrest; a stack of books works. This step comes first because everything after it depends on where your pelvis ends up. If your feet dangle, your pelvis rolls backwards, your lower back flattens, and no lumbar support can fix a spine that's already in the wrong shape.

2. Desk height, set against your elbows

With your shoulders relaxed, your forearms should be roughly parallel to the floor when your hands are on the keyboard. Most fixed desks are too tall for most people. If the desk is too high, raise the chair and add a footrest — raising the chair is nearly always easier than lowering a desk. If it's too low, that's harder to fix and worth a height-adjustable desk.

3. Monitor height and distance

Top of the screen at or slightly below eye level, and about an arm's length away. Laptop users: the screen and the keyboard cannot both be right at once. Either raise the laptop and add an external keyboard, or accept a compromise — but know you're making one.

4. Lumbar support last

Only once the first three are set does it make sense to judge lumbar support, because you're now judging it against a correctly positioned pelvis. Set it so it fills the natural inward curve of your lower back without pushing you forward. Our lumbar support guide covers what to do when the support won't sit where your curve is.

The mistakes worth naming

Buying the chair first. An expensive chair at the wrong height is worse than a cheap chair at the right one. Work through the four steps with what you own before deciding what to replace.

Armrests set too high. They should support your forearms without lifting your shoulders. Armrests you have to shrug into cause neck pain that people usually blame on the monitor.

Treating any of this as permanent. The best posture is the next one. A well-set chair that you never move in still leaves you stiff — stand up periodically, and change the recline through the day.

What the workplace-safety guidance actually says

None of the four steps above is our invention. The U.S. Occupational Safety and Health Administration publishes a computer-workstation guide, and it is worth reading for what it does and doesn't put numbers on. We quote it here so you can check us against the source: OSHA's chairs page and monitors page.

Chair: a test, not a measurement

OSHA's seat-height rule is a test you can run in ten seconds: the height is right “when the entire sole of the foot can rest on the floor”, with the back of the knee slightly higher than the seat. It gives no inch figure, because the right height depends on your legs. If lowering the seat would push the keyboard or monitor too high, OSHA's answer is the same as ours: a footrest.

It also names a check most people skip, seat depth. The seat should support most of your thigh without the front edge touching the back of your knee. If it does touch, the seat is too deep for you, and a chair with a depth adjustment is the fix; if you are tall, a seat that is too short leaves your thighs unsupported. For armrests, OSHA says to adjust them so they “just make contact with your lower arms” when your arms hang comfortably at your sides, and to remove armrests that cannot be adjusted properly — which matches the shrugging-shoulders mistake above.

On the back, OSHA wants a backrest that conforms to the natural curve of your spine, a lumbar support you can adjust for height, and the ability to recline at least 15 degrees from vertical. If your chair has no lumbar support at all, OSHA's stopgap is a rolled towel or a removable cushion.

Monitor: the numbers OSHA does give

Here OSHA is specific. The top of the monitor should be “at or slightly below eye level”, and the centre of the screen about 15 to 20 degrees below horizontal eye level. Viewing distance is 20 to 40 inches (50 to 100 cm), and at least 20 inches is the quick rule. That is a wider range than the usual “arm's length” advice, and a smaller screen may need larger text if you sit near the far end of it. For glare, put the monitor perpendicular to the window, and if you tilt the screen, keep it to roughly 10 to 20 degrees so ceiling lights don't reflect off it.

Why this matters when you shop

Every item in OSHA's chair list is something a spec sheet either states or leaves out: a seat-height range, a seat-depth adjustment, armrest adjustability, a lumbar that moves. That is why our posture roundup tabulates published seat height, and why a blank cell there means the maker doesn't say. The guidance also explains what a chair can't do for you: it can't set your monitor or your desk height, which is why the order of the steps above starts with the free adjustments.

What to spend money on, in order

If the free adjustments above leave you uncomfortable, fix things in this order: seat height (a chair that reaches your range), lumbar support that stays where you set it, then desk height, then everything else. That order follows the same logic as the setup steps — each item is only worth solving once the one before it is right.

On the first two, the chair whose published specs cover both is the Steelcase Leap: Steelcase gives the standard chair a 15½–20½ in seat height and height-adjustable lumbar as standard. The SIDIZ T50 adjusts lumbar for height and depth, but SIDIZ publishes no seat height for it — only a 5 ft 1 in to 6 ft 2 in user range — and on 1 October 2026 SIDIZ's own US store listed every T50 colour as sold out. (Correction: this paragraph previously said the T50 “reaches a usefully low seat height”. SIDIZ doesn't publish that figure, so we had no basis for saying it.) Specs and sources are on our posture roundup, and our lumbar guide explains what to feel for.