PPI Calculator
Calculate pixels per inch for any display, compare two screens side by side, and check if an image has enough DPI for high-quality printing.
Pixel Density Calculator
Calculate screen sharpness from pixel resolution and diagonal size, then compare two displays side by side.
Screen A
Enter a display or load a common preset.
PPI
461.4
Total Pixels
3,013,524
Megapixels
3.01
Dot Pitch
0.055 mm
Density Rating
Retina
Aspect Ratio
131:284
Screen Class
Excellent for phones and print previews
Screen B
Enter a display or load a common preset.
PPI
163.2
Total Pixels
8,294,400
Megapixels
8.29
Dot Pitch
0.156 mm
Density Rating
Medium
Aspect Ratio
16:9
Screen Class
Solid for desktops and TVs
Compare Two Screens
See which panel is sharper and how much pixel density changes between devices.
Screen A
461.4 PPI
Difference
298.3 PPI
Screen A is sharper
Screen B
163.2 PPI
Print DPI Check
Enter your image resolution and target print size to see whether the print will be crisp enough.
Print size
Image resolution
Horizontal DPI
375.0
Vertical DPI
240.0
Effective Print Quality
240.0 DPI
Good
Print verdict
Good print quality. Fine for posters, flyers, and casual photo prints.
Rule of thumb: 300 DPI is ideal for photos, around 200 DPI is often acceptable, and below that is best reserved for larger prints viewed from farther away.
How to Use
- Enter your screen width and height in pixels, plus the diagonal size in inches.
- Use a device preset if you want to load a common phone, tablet, laptop, or monitor instantly.
- Read the calculated PPI, total pixels, dot pitch, and density rating to judge screen sharpness.
- Use the comparison section to see which of two displays is sharper.
- Use the print DPI checker to match an image resolution to a target print size.
Frequently Asked Questions
What is PPI?
PPI means pixels per inch. It measures how many pixels fit into one inch of screen space. Higher PPI usually means a sharper display with finer detail.
What is the difference between PPI and DPI?
PPI is used for digital displays, while DPI usually refers to print output. People often use them interchangeably, but PPI is more accurate for screens and DPI is more accurate for printers.
What counts as a Retina display?
Retina is Apple marketing language for screens dense enough that individual pixels are hard to see at normal viewing distance. In simple terms, many modern phone displays above roughly 300 PPI feel Retina-like.
Does higher PPI always look better?
Usually yes, but viewing distance matters. A TV across the room can look sharp at a lower PPI, while a phone or tablet viewed close to your face benefits much more from high pixel density.
What DPI is good for printing photos?
About 300 DPI is the usual target for sharp photo prints. Around 200 DPI is still fine for many everyday uses, especially larger prints viewed from farther away.