Skip to main content

Guide

How far should you sit from your screen?

The short answer: about an arm's length away, roughly 20 to 28 inches (50 to 70 cm) for a typical laptop or monitor, with the top of the screen at or just below eye level. Bigger screens want a little more distance; the comfortable range is wider than people assume.

Why distance matters

Sitting too close makes your eyes work harder to focus and narrows how much of the screen you take in at once, which encourages squinting and leaning. It also tends to pull your whole upper body forward, so a screen that is too near quietly becomes a posture problem as well as an eye-strain one. A comfortable distance lets your eyes relax and your back stay upright.

Setting up your distance

  • Sit back fully in your chair and reach out: your fingertips should roughly reach the screen.
  • Raise the screen (a stand, or a few books) so the top is around eye level; you should look slightly down at the middle, not up.
  • Bump up text size rather than leaning in; readability should never cost you your distance.
  • On a laptop, an external keyboard lets you push the screen back to a healthy distance instead of hunching over it.

The catch: you drift

Almost nobody holds a set distance. As you get absorbed, or tired, you lean in by inches without realizing it, and by mid-afternoon you are far closer than you started. The problem is not knowing the right distance; it is noticing when you have left it.

How ScreenGuardian helps

ScreenGuardian estimates how far you are from the screen in real time and gives a gentle nudge when you drift in too close, all on your device, with camera frames never leaving your computer. It turns "sit back" from something you have to remember into something you simply notice. See it on the features page, or read about fixing desk posture and the 20-20-20 rule for eye breaks.

Common questions

Is there one exact correct distance?

No. It depends on screen size, text size, and your eyes. Arm's length is a reliable starting point; adjust until the screen is easy to read without leaning. Comfort is the real measure.

What about multiple monitors?

Keep the screen you use most directly in front of you at arm's length, and angle secondary screens around that. The same "sit back, raise it up" guidance applies to each.