Analysis & privacy
Pixels to cm and Inches Converter
Convert pixels to centimetres, millimetres and inches at any DPI, see how many pixels A4, A5 and Letter need, and check if an image is big enough to print.
How to use this tool
- 1
Choose convert, print pixels or image check.
- 2
Enter the length or the image size and the resolution (PPI).
- 3
Pick a paper size such as A4, A5 or Letter, or type your own.
- 4
Read the pixels needed, the print size, or the verdict.
Help
- Pixels only mean something at a given resolution. Enter your DPI/PPI (96 for screens, 300 for print) and the converter gives the length in px, mm, cm and inches.
- The print tab lists the pixels needed for A4, A5 or US Letter, or any custom size, at 72, 96, 150, 300 and 600 PPI. A4 at 300 PPI is 2480 × 3508 px.
- The check tab compares your image with the print size and gives its real resolution with a plain verdict, plus the largest size it can print at 300 PPI.
- One inch is exactly 25.4 mm, and the maths is exact: the display is only rounded.
Frequently asked questions
How many pixels is 1 cm?
It depends on the resolution: at 96 PPI, 1 cm is about 37.8 px; at 300 PPI it is about 118.1 px. Divide the PPI by 2.54 to get pixels per centimetre.
What size in pixels is an A4 page?
At 300 PPI, A4 (210 × 297 mm) needs 2480 × 3508 pixels. At 150 PPI it needs 1240 × 1754 and at 72 PPI 595 × 842.
What is the difference between DPI and PPI?
PPI counts pixels per inch on a screen or in an image, DPI counts printer dots per inch. For converting sizes the two are used interchangeably, and the tool accepts either.
Is 72 DPI or 300 DPI better?
For print, aim for 300 PPI at the final size. 72 or 96 is fine for screens only. Increasing the DPI of a small image does not add detail; you need more pixels.
Written and verified by the MaxyTools team · Updated on
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