Ergonomic desk height calculator
Enter your height and this free tool returns your ideal seat height, seated desk/keyboard height and standing-desk height, based on established ergonomic ratios — then points you to the riser, arm, chair or converter that gets you there. A starting point to fine-tune to comfort.
Drag or type — results update live.
Numbers are a starting point (±3 cm) — adjust to what feels level and relaxed.
Get to your numbers
Stands & risers
Raise a laptop or monitor to eye level.
Sit-stand desks
Hit your standing height, or convert your desk.
Office chairs
Adjustable seat height + lumbar support.
Footrests & mats
Feet flat when the desk can't drop further.
Frequently asked
How is the ideal desk height calculated?
From your standing height using established ergonomic ratios: seat height ≈ 26% of your height, a seated desk/keyboard height ≈ 40%, and a standing-desk height ≈ 63% (roughly your standing elbow height). Treat the numbers as a strong starting point, then fine-tune 2–3 cm to what feels level and relaxed.
Where should my monitor be?
The top of the screen at or just below eye level, about an arm's length away (50–70 cm). If your laptop sits too low, raise it on a stand and add an external keyboard, or use a monitor arm for fine control.
What if I can't change my desk height?
Adjust your chair to the correct seated desk height, then use a footrest so your feet stay flat and a riser to bring the screen to eye level. A sit-stand converter adds standing without replacing the desk.
Is one perfect posture the goal?
No — the best posture is your next one. Set a good baseline with these numbers, then move and switch between sitting and standing through the day.