What is A4 at 300 PPI?

A4 in portrait orientation is 2480 × 3508 pixels at 300 PPI. Landscape uses the same two values in reverse order.

What aspect ratio is A4?

A4 uses a 1:√2 aspect ratio. An image with a different ratio must be cropped, fitted with borders or placed inside the page.

Does the A4 pixel size include bleed?

No. The table uses final trim dimensions. Add the exact bleed required by the printer to both sides before calculating the full artwork canvas.

Is A4 the same as 8.5 × 11 inch Letter paper?

No. A4 is 210 × 297 mm, while US Letter is 215.9 × 279.4 mm. Letter is slightly wider and noticeably shorter.

ISO size reference

A4 Size in Pixels and Print Dimensions

A4 paper measures 210 × 297 mm. Its pixel dimensions change with PPI; the physical trim size does not.

Quick answer

A4 measures exactly 210 × 297 mm (21 × 29.7 cm), or approximately 8.27 × 11.69 inches. At 300 PPI, portrait A4 rounds to 2480 × 3508 pixels.

300 PPI: 2480 × 3508 px · trim size only

Pixel table

A4 pixels by PPI

Portrait values are rounded to the nearest whole pixel after converting the native physical dimensions.

PPI	Width	Height	Use context
72	595 px	842 px	Layout or screen reference
96	794 px	1123 px	Layout or screen reference
150	1240 px	1754 px	Print / distance dependent
240	1984 px	2806 px	Print / distance dependent
300	2480 px	3508 px	Detailed print target
600	4961 px	7016 px	Detailed print target

A4 vs Letter

Similar, not interchangeable

US Letter is 5.9 mm wider and 17.6 mm shorter than A4 in portrait orientation. A full-page layout can reflow or crop when switched between them.

Compare US Letter →

Bleed example

A4 with 3 mm bleed

Adding 3 mm on every edge creates a 216 × 303 mm artwork canvas, which rounds to 2551 × 3579 pixels at 300 PPI.

Calculate another margin →

Common mistake

Pixels are not the paper standard

ISO 216 defines the physical A4 trim. Pixel dimensions exist only after you choose a PPI, and bleed is a separate production value.

Change the resolution

Calculate A4 at any PPI.

Interactive calculator

pixels = millimetres ÷ 25.4 × PPI

Paper preset → pixel dimensions

Print preset

Target PPI

PPI

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

Print setup

Trim first. Add production values second.

A4 identifies the final physical format. Bleed expands the artwork beyond that edge; a safe margin moves important content inward. Those extra values depend on the print provider.

Calculate bleed and safe area →

Check before you print

Use the image, not a guess.

Run the source pixels against the exact size you plan to order.

Check an image →