What Size Is A4 in Pixels? | Resolution Guide for Print & Screen

At standard print quality (300 PPI), an A4 sheet measures 2,480 × 3,508 pixels, while screen resolution (72 PPI) gives 595 × 842 pixels — the dimensions depend entirely on your dots per inch.

Getting the pixel dimensions wrong for A4 paper means your design comes out blurry, cropped, or too large to load. Whether you’re printing flyers or laying out a PDF, the number you need changes with the output method. Here’s how it works at every common DPI value, plus exact software steps so your file lands right the first time.

What Determines A4 Pixel Dimensions?

The physical size of A4 never changes under the ISO 216 standard: 210 millimeters wide by 297 millimeters tall. The pixel dimensions shift because DPI (dots per inch) or PPI (pixels per inch) defines how many digital dots fill each inch of that fixed space. Double the DPI, and both width and height double in pixel count. The formula is simple: (width in inches × DPI) × (height in inches × DPI).

Design software like Adobe Photoshop and Moda use this exact calculation when you set your canvas to A4 and choose a resolution. The DPI value you select dictates the pixel output — not the paper size itself.

A4 Pixel Dimensions by DPI — Reference Table

The table below shows the most common A4 pixel sizes across standard DPI values, from web display to high-end photo printing. All dimensions are given in portrait orientation (width × height).

For landscape orientation, swap the values — 3,508 × 2,480 at 300 DPI. That mistake (using portrait dimensions when you meant landscape) is one of the most common layout errors in design software.

How to Set Up A4 in Pixels in Your Design Software

Creating a new document at A4 size is straightforward, but one wrong setting can produce distorted output. These steps work across Moda, Adobe Photoshop, and most similar tools.

1. Open your design software and choose New Canvas or New Document.
2. Enter the pixel dimensions for your required DPI. For a print-ready file, set Width to 2,480 px and Height to 3,508 px.
3. Set resolution to 300 PPI (not DPI — PPI is the correct term for digital files).
4. Select orientation: choose Portrait for standard pages, Landscape to reverse the dimensions.
5. Export correctly: use PDF for print to preserve dimensions, or PNG / JPG for digital use.

If you’re buying a device to handle these designs on the go, check our top picks for A4 size tablets that match the screen-to-print workflow.

The when you export, open the file properties and confirm the pixel dimensions match your target DPI.

Common Mistakes People Make With A4 Pixel Sizes

Even experienced designers slip on these three gotchas.

Confusing DPI with PPI: Printers use DPI (ink dots), screens use PPI (pixels). For digital files, always set 300 PPI — DPI only matters when the printer interprets the file. Set your canvas at 300 PPI and let the printer handle its own dot mapping.

Forgetting that 72 DPI is outdated: The old 72 DPI standard (595 × 842 pixels) came from early Mac displays. Modern screens default to 96 DPI (794 × 1,123 pixels). If you’re designing for web, use 96 DPI — text renders sharper and images load faster than the bloated 300 DPI equivalent.

Mixing up A4 with US Letter: US Letter (8.5 × 11 inches) is slightly shorter and wider than A4 (8.27 × 11.69 inches). If you design at A4 dimensions (2,480 × 3,508) and the printer defaults to Letter, your margins may crop or scale unexpectedly. Always check your printer’s paper source setting before hitting “Print.”

When to Use Each Resolution

The right pixel dimension depends on your output destination. Web images at 2,480 pixels wide will bog down page load times — use the 96 DPI version (794 × 1,123) for any online gallery, blog post, or PDF preview. For a printed brochure that will sit in someone’s hand, 300 DPI is the minimum; the Adobe Creative Cloud guide confirms that offset print quality requires exactly this resolution. For large-format posters or newspaper inserts where viewing distance is greater, 150 DPI (1,240 × 1,754) is acceptable and keeps file sizes manageable.

A good rule of thumb: if the file will only be seen on a screen, stay at 96 DPI. If it’s going to a commercial printer, use 300 DPI. The 150 DPI middle ground works for short-run flyers where file size matters but print quality still counts.

Final Resolution Checklist

Before you export your next A4 design, run through this list to catch the common errors that ruin prints and slow down web pages.

• Confirm your DPI matches the output purpose (300 for print, 96 for web).
• Verify width and height orientation (portrait 2,480 × 3,508; landscape 3,508 × 2,480).
• Check export format (PDF for print, PNG/JPG for digital).
• Test that your printer is set to A4 paper source, not US Letter.
• Open the exported file’s properties and confirm the pixel count matches your intended DPI.