Choose an ISO, US or photo format and calculate its pixel dimensions at any PPI, in portrait or landscape orientation.
Quick answer
Choose the physical preset, orientation and PPI. The calculator converts the stored ISO, US or photo dimensions from millimetres to inches, multiplies by PPI and rounds the final pixel count once.
pixels = millimetres ÷ 25.4 × PPI
Interactive calculator
pixels = millimetres ÷ 25.4 × PPI
Paper preset → pixel dimensions
Quick targets
Calculated resultsUpdates as you change the inputs
A4 pixel dimensionsPrimary result
2480 × 3508 px
Trim sizeResult
210 × 297 mm
Trim size in inchesResult
8.27 × 11.69 in
A4 at common targets
Target
Width
Height
150 PPI
1240 px
1754 px
240 PPI
1984 px
2806 px
300 PPI
2480 px
3508 px
How to use it
A result you can reproduce.
Choose a physical paper or photo preset.
Set portrait or landscape orientation.
Choose a PPI and copy the required pixel dimensions.
Every result is calculated in the page from the displayed inputs. Your printer's written production specification remains the final authority.
Worked example
See the numbers in context.
A4 is 210 × 297 mm, which rounds to 2480 × 3508 px at 300 PPI and 1240 × 1754 px at 150 PPI.