Set seat height so your feet are flat and knees about level with hips, then seat depth so two to three finger widths fit between the seat edge and the back of your knees. Position lumbar support in the curve of your lower back, lower armrests to just support your forearms at desk height, and set recline tension so the backrest supports you as you lean.
Most office chairs are adjusted badly. Five minutes with the levers makes a bigger difference than a new chair.
Adjust in this order
- Seat height: feet flat, knees about level with hips.
- Seat depth: two to three finger widths between seat edge and the back of your knees.
- Lumbar support: in the curve of your lower back, around belt height.
- Armrests: at or slightly below desk height, close to your body.
- Recline: set tension so the back supports you as you lean; lock it if you prefer upright.
Adjustment ranges to check before buying
| Adjustment | Why it matters |
|---|---|
| Seat height range | Fits your leg length and desk |
| Seat depth slider | Fits short and long thighs |
| Adjustable lumbar | Matches your back’s curve |
| 3D or 4D armrests | Height, width, depth and angle |
| Weight capacity | Durability and safety |
| BIFMA testing | Tested to office furniture standards |
| Warranty | Long warranties signal durability |
Big and tall
If you are over the chair’s rated height or weight, choose a big and tall chair with a wider seat and higher capacity.
Then set up your desk using the ergonomic measurements guide. Browse office chairs.
Common questions
What chair adjustments matter most?
Seat height, seat depth, lumbar support and armrest height. Recline tension and lock come next.
What is seat depth?
How far the seat extends forward. Adjustable seat depth lets shorter and taller people use the backrest without the seat edge pressing behind the knee.
Should armrests touch the desk?
They should be at or just below desk height, so your shoulders relax and the chair can tuck in.
Do I need a headrest?
Only if you recline often. Upright typing does not need one.