Pixels to Inches / cm & Print Size Calculator
Convert pixels to inches, centimeters and millimeters at any DPI — and find the largest print size an image supports, or the pixels you need for a print.
How to use
- 1Enter the image's pixel width and height and the print resolution (300 DPI for photo quality).
- 2See the print size, or switch mode to find the pixels needed for a print size.
How it's calculated
Inches = pixels ÷ DPI. Centimeters = inches × 2.54. Pixels needed = inches × DPI.
Frequently asked questions
What DPI do I need for printing?
300 DPI for photos and close viewing, 150–200 for posters, and 72–100 for large banners seen from a distance.
Does changing DPI change the image?
No — DPI is just a label telling printers how large to print. The pixels (the real detail) stay the same.
How big can I print a 12 MP photo?
A 4000×3000 image prints at about 13.3×10 inches (34×25 cm) at 300 DPI.