Image print math
Calculate print dimensions
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Print resolution calculator
DPI & Print Size Calculator
Convert pixels to inches, centimetres or millimetres at any DPI, work backwards from a target print size, and check common paper sizes.
Calculated size10.00 × 6.67 in
Size in inches10.00 × 6.67 in
Size in centimetres25.4 × 16.9 cm
Pixel dimensions3000 × 2000 px
Megapixels6.00 MP
Estimated qualityExcellent
Processed locally in this browser; the file is never uploaded.
Print reference
Will this image fit common print sizes?
| Paper or photo size | Pixels required | Effective DPI | Estimated quality |
|---|
Landscape and portrait orientation are checked automatically. Effective DPI uses the orientation that best fits the image.
Calculation method
How the numbers are calculated
Pixels to physical size
Print inches = pixels ÷ DPI. Multiply inches by 2.54 for centimetres.
Physical size to pixels
Required pixels = print inches × target DPI. Results round to whole pixels.
Practical quality guide
300 DPI is a strong photo-print target, 240 DPI is generally good, 150 DPI can suit posters viewed farther away, and lower values may show softness.
DPI and print size FAQ
Does changing DPI add image detail?
No. DPI changes the relationship between existing pixels and physical print size; it does not create new image detail.
How many pixels does A4 need at 300 DPI?
A4 is about 2480 × 3508 pixels at 300 DPI in portrait orientation.
Is 150 DPI enough for a poster?
It can be suitable for a poster viewed from farther away. Close-viewed photos usually benefit from 240 to 300 DPI.
Are uploaded images sent to a server?
No. The browser reads only the local width and height and does not upload the image.