Updated October 2026
Why Setup Matters
Even the best office chair can feel wrong if it is not adjusted to you. Most chairs ship set for an average person, and many people never change a single setting. Ten minutes of setup can transform how your back, neck and shoulders feel at the end of the day. Follow these steps in order, because each adjustment affects the next.
Note: these are general comfort guidelines, not medical advice. If you have persistent pain, ask a doctor or physical therapist for guidance specific to you.
Step 1: Set the Seat Height
Stand in front of the chair and raise or lower the seat until the front edge sits just below your kneecap. Sit down. Your feet should rest flat on the floor, your thighs should be roughly level with the floor, and your knees should be at about a right angle, or slightly lower than your hips.
If your feet do not reach the floor at a height that suits your desk, use a footrest rather than lowering the chair below your ideal height.
Step 2: Adjust the Seat Depth
Sit all the way back so your lower back touches the backrest. Slide the seat forward or back until two to three fingers fit between the front edge and the back of your knees.
- Too deep: the edge presses behind your knees, and you perch forward away from the backrest.
- Too shallow: your thighs are unsupported, which can feel tiring over time.
On chairs without a slider, like the Herman Miller Aeron, seat depth depends on choosing the right size.
Step 3: Position the Lumbar Support
Find the inward curve of your lower back, usually just above belt level. Move the lumbar support up or down until it fills that curve. If your chair has a firmness control, as on the Steelcase Leap V2, start gentle and increase gradually until you feel supported but not pushed forward.
On the Aeron, adjust the PostureFit SL pads so they press lightly at the base of your spine. On adaptive chairs like the Embody, set the backrest angle so it follows your spine's curve.
Step 4: Set the Recline Tension and Lock
Unlock the recline and lean back. If the chair drops away too easily, increase the tension. If you have to push hard, reduce it. You want to recline with light effort and return upright without strain.
Use the recline lock thoughtfully. Locking upright suits focused typing; leaving the back free for part of the day encourages healthy movement. A slight recline for reading and calls often feels better than sitting bolt upright.
Step 5: Adjust the Armrests
Sit with your shoulders relaxed and your elbows bent at roughly 90 degrees. Raise or lower the armrests until they just touch your forearms at that height, level with your desk or keyboard tray. Then bring them in or out so your elbows stay close to your body, and slide or pivot the pads to support your forearms where you type and mouse.
If the armrests stop you from pulling close to your desk, lower them or slide them back.
Step 6: Set Up Your Desk Around the Chair
Monitor
Place the top of your screen at or slightly below eye level, about an arm's length away, so you do not crane your neck forward or tilt it up.
Keyboard and Mouse
Keep them close and at elbow height, so your wrists stay straight and your shoulders relaxed.
Laptop Users
A laptop screen is almost always too low. Use a stand plus a separate keyboard and mouse for long sessions.
Desk Height
If your desk is too high for your ideal seat height, a height-adjustable desk or keyboard tray solves the problem. Do not raise your chair so high your feet dangle.
Quick Setup Checklist
| Adjustment | Target |
|---|---|
| Seat height | Feet flat, thighs level, knees about 90 degrees |
| Seat depth | Two to three fingers behind the knees |
| Lumbar | In the curve of your lower back, gentle to moderate pressure |
| Recline tension | Lean back with light effort |
| Armrests | Forearms supported at desk height, shoulders relaxed |
| Monitor | Top of screen at or just below eye level |
Quick Setup Tips for Popular Chairs
Herman Miller Aeron
Confirm your size first, then set PostureFit SL so the pads press lightly at the base of your spine. Use the tilt limiter to lock upright for typing. Read our Aeron review.
Steelcase Leap V2
Set lumbar height first, then lower-back firmness, starting soft. Adjust upper-back force to taste, and use Natural Glide by reclining while you read. Read our Leap V2 review.
Steelcase Gesture
Turn the seat depth knob while seated, then swing the arms in close for device use or out for typing. Read our Gesture review.
Herman Miller Embody
Set the BackFit angle so the backrest follows your spine, then give the pixelated seat a couple of weeks. Read our Embody review.
Setting Up for a Standing Desk
If you alternate sitting and standing, set your chair first, then raise the desk to elbow height while seated and save that position. When standing, raise the desk so your elbows stay at about 90 degrees. Switching positions regularly is one of the best things you can do during a long day.
Setting Up for Two Monitors
Center your primary monitor in front of you. If you use both equally, place the join between them in front of you. Keep both at the same height and distance, so you turn your head rather than twisting your torso or chair.
Common Setup Mistakes
- Sitting on the front edge: you lose all back support. Sit fully back.
- Lumbar too high or too low: it should sit in the curve, not on your mid-back or tailbone.
- Armrests too high: they push your shoulders up toward your ears.
- Recline always locked: allow some movement through the day.
- Never revisiting your settings: adjust again if you change desks, shoes or work habits.
Good Habits Beyond the Chair
- Stand up, stretch or walk for a few minutes every 30 to 60 minutes.
- Shift positions; no single posture is perfect for hours.
- Keep frequently used items within easy reach.
When Your Chair Cannot Be Set Up Properly
If your chair lacks seat depth adjustment, real lumbar support or adjustable arms, no amount of setup will make it fit well. That is the main reason ergonomic chairs exist. If you sit all day, a chair like the Leap V2, with its exceptionally adjustable lumbar, or our #1 pick, the Aeron, gives you the adjustments you need. On a budget, the Steelcase Series 1 covers the essentials. See our office chair buying guide.
More Setup Help
Not sure what height to use? See our office chair height chart. If your feet do not reach the floor, an under-desk footrest helps, and if your chair lacks lower-back support, try a lumbar support pillow.
Office Chair Setup FAQs
How High Should My Office Chair Be?
High enough that your feet rest flat with your thighs roughly level and knees at about 90 degrees.
Where Should Lumbar Support Be?
In the inward curve of your lower back, usually just above belt level.
Should My Armrests Touch My Desk?
They should be at or just below desk height so your forearms are supported and your shoulders relaxed, while still letting you pull close.
Is It Better to Sit Upright or Reclined?
Neither all day. A slightly reclined position for reading and an upright position for typing, with frequent changes, tends to feel best.
