Check a photo’s maximum print size
Start with the original pixel dimensions and compare the physical size at 300, 240 and 150 PPI.
Free pixels to inches calculator
Convert pixels to inches at any PPI.
Enter an image’s pixel dimensions and choose its print density to calculate the physical width and height in inches, centimetres or millimetres.
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Physical dimensions6.4 × 3.6 inat 300 PPI
Also useful16.256 × 9.144 cm
When to use it
Start with the result you need
This calculator is most useful when one part of the print specification is known and another needs to be checked.
Prepare artwork for a listing
Translate a downloadable file’s pixel dimensions into the print sizes a customer can realistically use.
Compare a printer requirement
Confirm whether the available pixels cover the requested dimensions at the provider’s minimum resolution.
The calculation
How it works
Divide the number of pixels by pixels per inch: inches = pixels ÷ PPI. A 3000-pixel-wide image at 300 PPI prints 10 inches wide.
PPI describes the image’s pixels per inch. Printer DPI is a separate hardware measure, although people often use “DPI” when calculating image print size.
Quick reference
Common image sizes at different print densities
The same pixel dimensions produce a smaller print as PPI increases. Values are shown in inches and assume no cropping.
| Image size | 150 PPI | 240 PPI | 300 PPI |
|---|---|---|---|
| 1200 × 1800 px | 8 × 12 in | 5 × 7.5 in | 4 × 6 in |
| 2400 × 3000 px | 16 × 20 in | 10 × 12.5 in | 8 × 10 in |
| 3000 × 4500 px | 20 × 30 in | 12.5 × 18.75 in | 10 × 15 in |
| 3600 × 5400 px | 24 × 36 in | 15 × 22.5 in | 12 × 18 in |
| 4000 × 6000 px | 26.67 × 40 in | 16.67 × 25 in | 13.33 × 20 in |
A lower effective PPI may suit a large print viewed from farther away. Use the printer’s own requirement for production.
Check the numbers
1920 × 1080 px at 300 PPI
The image prints at 6.4 × 3.6 inches, or approximately 16.26 × 9.14 centimetres.
4500 × 5400 px at 300 PPI
The image prints at 15 × 18 inches—an often-used size for art prints and print-on-demand files.
6000 × 4000 px at 240 PPI
The uncropped image measures 25 × 16.67 inches. A different paper ratio may require cropping one dimension.
Before you export
Common mistakes to avoid
Treating 72 DPI metadata as a quality limit
The embedded value does not determine maximum size by itself. Calculate from the actual pixels and intended inches.
Ignoring the final crop
Cropping removes pixels. Use the dimensions after cropping when the image and paper have different aspect ratios.
Assuming bigger is always acceptable
As print size increases, effective PPI falls. Check the result at the expected viewing distance and against the printer’s specification.
Convert pixels to inches at any PPI. FAQ
How many pixels are in one inch?
It depends on the chosen density. At 300 PPI, one inch contains 300 pixels. At 96 PPI, one inch contains 96 pixels.
Do pixels have a fixed physical size?
No. A pixel has no fixed size in inches. Its physical size depends on how many pixels are placed into each inch.
Should I use 300 PPI for every print?
300 PPI is a common target for close-viewed prints. Posters and large-format work viewed from farther away can often use a lower effective resolution. Confirm the printer’s requirement.
Reviewed for accuracy: 28 July 2026