PrintPixelPixels to Inches
Enter your image's pixel width and height and a resolution, and see the print size in inches, centimeters and millimeters. The conversion uses PPI — pixels per inch.
How the conversion works
Print size in inches equals pixel width divided by PPI (pixels per inch). For centimeters, multiply the inch result by 2.54; for millimeters, by 25.4. There's nothing hidden — the calculator applies the same math you can do by hand.
Pixels on their own have no physical size. PPI is the link that connects them to inches: it states how many of the image's pixels will be packed into each inch of the print. Raise the PPI and the same image prints smaller and sharper; lower it and the print grows but looks softer up close.
4032 × 3024 px at 300 PPI
4032 ÷ 300 = 13.44 in wide · 3024 ÷ 300 = 10.08 in tall.
4032 × 3024 px at 150 PPI
Halve the resolution, double the print: 26.88 × 20.16 in.
1080 × 1920 px at 300 PPI
3.6 × 6.4 in — a phone screenshot, roughly 9:16.
A worked example
Take a photo that is 4032 × 3024 pixels and a target of 300 PPI:
Width: 4032 ÷ 300 = 13.44 inches
Height: 3024 ÷ 300 = 10.08 inches
In centimeters that's about 34.1 × 25.6 cm. Drop to 150 PPI and the same photo prints at 26.88 × 20.16 inches (about 68.3 × 51.2 cm) — softer up close, but fine for viewing from a distance.
Frequently asked questions
Do pixels have a physical size?
No. A pixel is just a dot of image data with no size of its own. Only when you decide how many pixels fit into an inch — the PPI — do pixels gain a physical dimension. That's why the same 4032-pixel-wide image is 13.4 inches at 300 PPI but 26.9 inches at 150 PPI.
What is the pixels-to-inches formula?
Print size in inches = pixel dimension ÷ PPI. For centimeters, multiply the inch result by 2.54; for millimeters, by 25.4. For example, 4032 pixels at 300 PPI = 4032 ÷ 300 = 13.44 inches wide.
What PPI should I use for the conversion?
Use the PPI you'll actually print at. 300 PPI is the standard for close-up photo prints, 240 PPI still gives high quality, and 150 PPI is common for larger prints viewed from a distance. The conversion only makes sense with a specific PPI in mind.
Is this the same as the DPI/PPI calculator?
Partly. This converter goes one direction — pixels to a physical print size. The DPI / PPI calculator works both ways: it can also start from a print size and work out the pixels you need. The math underneath is the same PPI formula.