24" 1440p (QHD) PPI: pixel density & viewing distance
A 24-inch monitor at 2,560 × 1,440 (1440p (QHD), 16:9) has a pixel density of about 122.4 PPI. Here is what that means for sharpness and how far away to sit.
Recommendations are planning estimates, not electrical or purchasing advice. The hardware figures behind them are vendor-published; your exact board-partner model and build can still differ.
Pixel density
122.4 PPI
High density (100-125 PPI)
Pixel pitch
0.208 mm
Distance between the centres of adjacent pixels.
Retina distance
71 cm
Closest distance at which 20/20 vision can no longer resolve individual pixels.
Comfortable range
71–107 cm
From the retina distance out to 1.5× it.
At a typical ~70 cm desk distance, you may still notice some pixel structure; it sharpens as you sit back. Total pixels: 3,686,400.
High density (100-125 PPI)
- Office —
- Office: noticeably crisper text than the desktop norm, usually still fine at 100% scaling.
- Gaming —
- Gaming: the popular sharpness/performance balance — 1440p at 27" lives here.
- Design —
- Design: good working density for photo and layout work.
Comparing a different size or resolution? Open the PPI Calculator with these values pre-filled →
Frequently asked questions
What is the PPI of a 24-inch 1440p (QHD) monitor?
A 24-inch display at 2,560 × 1,440 works out to about 122.4 pixels per inch (PPI), with a pixel pitch of 0.208 mm.
Does a 24-inch 1440p (QHD) monitor look sharp at a desk?
At its 122.4 PPI, pixels are resolvable until about 71 cm away, which is farther than a typical ~70 cm desk distance — so at the desk you may notice some pixelation. It sharpens up as you sit back.
What viewing distance suits a 24-inch 1440p (QHD) monitor?
A comfortable range is roughly 71 cm to 107 cm: closer and pixels become visible, farther and you stop benefiting from the resolution.