WORKED EXAMPLE
Is 4000 pixels enough for a 16-inch print?
Divide 4000 pixels by 16 inches. The result is 250 PPI, generally a strong resolution for a quality photo print.
4000 ÷ 16 = 250 PPIPrint quality
Private image DPI checker
Choose an image, enter your intended print width, and check whether it has enough pixels for a sharp result.
◆ Runs locally in your browser
Effective print resolution
400 PPIExcellent · resulting size 10.0 × 7.5 inHOW TO CHECK IMAGE DPI
Check print resolution before you order.
This calculator measures effective print resolution from the image pixels and the physical size you plan to print.
- 01
Choose your image
Select a browser-supported image. Its pixel dimensions are read locally and the file is never uploaded.
- 02
Enter the print width
Use the final trimmed width of your photograph, artwork, poster, or other print in inches.
- 03
Check the result
Compare the effective PPI with the quality guidance, then reduce the print size if you need a sharper result.
WHAT THE NUMBER MEANS
Effective PPI depends on print size.
The same image has a lower effective PPI when printed larger. Metadata marked “300 DPI” does not guarantee a 300 PPI print—the pixel dimensions and chosen print size determine the real value.
Use our pixels-to-inches converter to find the maximum size at a chosen resolution.
HOW IT WORKS
A clear answer, with the math to match.
Formula
effective PPI = pixel width ÷ print widthA 4000 px-wide image printed 10 inches wide has an effective resolution of 400 PPI.
COMMON QUESTIONS
Useful context, not filler.
Is my image uploaded?＋
No. The browser reads the image dimensions on your device. The file is not sent to our server.
Why does DPI change with print size?＋
The same pixels are spread over a larger or smaller physical area. A larger print therefore has fewer pixels per inch.
What is a good effective resolution?＋
Around 300 PPI is excellent for close-viewed photo prints. 200–240 PPI is often very good, while 150 PPI can work well for posters.