SizeKit

SizeKit reference

A3 Size in Pixels

Calculate A3 pixels for 72, 96, 150, 300, 600 or custom DPI.

A3 at 300 DPI is 3508 x 4961 px. At 150 DPI it is 1754 x 2480 px.

Immediate answer

A3 pixel presets

300 DPI is the common print default; 150 DPI is often acceptable for larger viewing distance; 72/96 DPI are mostly screen or layout references.

A3 dimensions
300 DPI 3508 x 4961 px high quality print
150 DPI 1754 x 2480 px lighter file
96 DPI 1123 x 1587 px screen reference

SizeKit

All common DPI values

Use this table when you need a specific preset.

DPIPortrait pixelsLandscape pixels
72 DPI842 x 1191 px1191 x 842 px
96 DPI1123 x 1587 px1587 x 1123 px
150 DPI1754 x 2480 px2480 x 1754 px
300 DPI3508 x 4961 px4961 x 3508 px
600 DPI7016 x 9921 px9921 x 7016 px

SizeKit

How the calculation works

Pixel dimensions are not fixed until you choose DPI.

px = round((mm / 25.4) x DPI). For A4 at 300 DPI: round((210 / 25.4) x 300) x round((297 / 25.4) x 300) = 2480 x 3508 px.

SizeKit

FAQ

Common pixel-size questions.

Is A3 always 3508 x 4961 px?

No. 3508 x 4961 px is the 300 DPI value. Pixel dimensions change when DPI changes.

Should I use 300 DPI for print?

300 DPI is a common high-quality print target. 150 DPI can be acceptable for larger viewing distances.