PrintPixelA4 Size in Pixels
A4 is the standard document size in most of the world: 210 × 297 mm. Here are the pixel dimensions you need at every common resolution, plus a free calculator for any DPI.
A4 is 210 × 297 mm (21.0 × 29.7 cm, 8.27 × 11.69 in). At300 PPI — a common target for high-quality close-viewed print output — a full-bleed A4 needs 2480 × 3508 pixels in portrait, or 3508 × 2480 pixels in landscape.
| Resolution | Pixels |
|---|---|
| 300 PPI | 2480 × 3508 px |
| 240 PPI | 1984 × 2806 px |
| 200 PPI | 1654 × 2339 px |
| 150 PPI | 1240 × 1754 px |
Pixel dimensions are computed from the physical size of A4 (210 × 297 mm) at each resolution.
A4 (210 × 297 mm) at common resolutions
| Resolution | Pixels | Physical size |
|---|---|---|
| 300 PPI | 2480 × 3508 px | 21.0 × 29.7 cm |
| 240 PPI | 1984 × 2806 px | 21.0 × 29.7 cm |
| 200 PPI | 1654 × 2339 px | 21.0 × 29.7 cm |
| 150 PPI | 1240 × 1754 px | 21.0 × 29.7 cm |
Pixel counts are computed from the real physical dimensions of A4 (210 × 297 mm) at each resolution — they are not hard-coded. To get these values for any other print size, use the calculator above.
A4 at screen and ultra-high resolutions
| Resolution | Pixels (portrait) | Megapixels | Practical use |
|---|---|---|---|
| 72 PPI | 595 × 842 px | 0.5 MP | Screen resolution — not recommended for print |
| 96 PPI | 794 × 1123 px | 0.9 MP | Standard screen resolution — not a print target |
| 600 PPI | 4961 × 7016 px | 34.8 MP | Ultra-high resolution — exceeds most camera sensors |
A4 size in pixels at 300 DPI
300 PPI is a common target for high-quality close-viewed print output. At this resolution, a full-bleed A4 needs 2480 × 3508 pixels — roughly 8.7 megapixels.
2480 × 3508 px
Width: 210 mm (8.27 in) × 300 = 2480 px
Height: 297 mm (11.69 in) × 300 = 3508 px
3508 × 2480 px
Same pixel count, rotated 90°. Most printers handle this automatically.
The value 2480 × 3508 comes directly from A4's physical dimensions. A4 is 210 mm wide, which is8.27 inches. At 300 pixels per inch, that's 8.27 × 300 ≈ 2480 pixels across. The height is 297 mm (11.69 in), giving 11.69 × 300 ≈ 3508 pixels down. These are not arbitrary numbers — they are derived from the ISO 216 standard that defines A4 as 210 × 297 mm.
A4 size in pixels for printing
The right resolution for your A4 print depends on viewing distance, printer capability, and the quality of your source image. Here is a practical guide.
| Resolution | Pixels (portrait) | Megapixels | Practical note |
|---|---|---|---|
| 72 PPI | 595 × 842 px | 0.5 MP | Screen resolution — generally too low for high-quality printing |
| 96 PPI | 794 × 1123 px | 0.9 MP | Standard screen resolution — not a typical print target |
| 150 PPI | 1240 × 1754 px | 2.2 MP | Often acceptable for documents and prints viewed from some distance |
| 200 PPI | 1654 × 2339 px | 3.9 MP | Good quality for most A4 printing purposes |
| 240 PPI | 1984 × 2806 px | 5.6 MP | High-quality prints; sharp at normal viewing distance |
| 300 PPI | 2480 × 3508 px | 8.7 MP | Common target for high-quality close-viewed print output |
| 600 PPI | 4961 × 7016 px | 34.8 MP | Very high resolution — often more than A4 printing requires |
Actual print requirements depend on your printer, paper type, viewing distance, and the detail in the source image. A document read at arm's length needs fewer pixels per inch than a photo examined up close. If you're unsure, the print quality checker gives a practical verdict for your specific file at A4.
A4 at 2400 PPI: 19843 × 28063 pixels (556.9 megapixels). This is an ultra-high resolution that is generally unnecessary for ordinary A4 printing. The interactive calculator above accepts 2400 PPI (or any value from 1 to 2400), but most consumer printers and camera sensors cannot usefully deliver this level of detail. The term "DPI" (dots per inch) is often used interchangeably with "PPI" (pixels per inch) in search queries and everyday print terminology, though technically DPI refers to the printer's ink droplet density and PPI refers to the digital image's pixel density.
A4 portrait vs landscape
In portrait orientation (the default), A4 is 2480 × 3508 pixels at 300 PPI. In landscape orientation it's 3508 × 2480 pixels — the same pixel count, just rotated. Most printers handle the rotation automatically.
Width: 210 mm · Height: 297 mm
At 300 PPI: 2480 × 3508 px
Width: 297 mm · Height: 210 mm
At 300 PPI: 3508 × 2480 px
A4's ISO 216 ratio of 1:1.414 is the same in both orientations. The total pixel count does not change — only the width and height are swapped. This applies at every resolution, not just 300 PPI.
How A4 pixel dimensions are calculated
The pixel dimensions of A4 are derived from its physical size and the chosen resolution (PPI).
The formula is: pixels = round((millimetres / 25.4) × PPI). There are 25.4 millimetres in one inch, so dividing the physical dimension by 25.4 converts it to inches. Multiplying by the PPI gives the pixel count, which is then rounded to the nearest whole pixel. For digital images, pixel density is technically expressed as PPI (pixels per inch), although "DPI" (dots per inch) is commonly used in search queries and everyday print terminology.
Worked example at 300 PPI: A4 is 210 mm wide. 210 ÷ 25.4 = 8.27 inches. 8.27 × 300 ≈ 2480 pixels. The height is 297 mm. 297 ÷ 25.4 = 11.69 inches. 11.69 × 300 ≈ 3508 pixels. The result is 2480 × 3508 pixels — matching the values shown throughout this page.
The same formula works at any resolution. At 72 PPI: 210 ÷ 25.4 × 72 ≈ 595 px wide. At 600 PPI: 210 ÷ 25.4 × 600 ≈ 4961 px wide. The calculator above applies this formula automatically for any PPI value you enter.
A4 size and ISO 216
A4 is defined by the ISO 216 standard as part of the A-series paper system. Its physical dimensions are exactly 210 × 297 millimetres. This standard is used in most countries around the world.
The pixel dimensions of A4 are not an intrinsic property of the paper — they are derived from the physical size combined with the chosen pixel density. A sheet of A4 paper is always 210 × 297 mm regardless of how many pixels you assign to it. The values on this page (2480 × 3508 at 300 PPI, 595 × 842 at 72 PPI, and so on) all come from applying the formula above to those fixed physical dimensions.
Can my image be printed on A4?
Compare your image's pixel dimensions to the values above. If your image is at least 2480 × 3508 pixels, it covers A4 at 300 PPI without any upscaling. If it's smaller, the effective PPI drops — the print may still look fine, especially if it's viewed from a distance rather than examined up close.
The quickest way to check is tocheck your image with the Image Print Size Calculator. Upload your photo and it shows the exact resolution at A4 — plus whether any cropping is needed to fit the A4 aspect ratio. Images are processed entirely in your browser and never uploaded.
Frequently asked questions
What is A4 size in pixels?
At 300 PPI — a common target for high-quality close-viewed print output — A4 is 2480 × 3508 pixels in portrait orientation. The exact pixel count depends on the resolution you choose: at 72 PPI it is 595 × 842 px, at 150 PPI it is 1240 × 1754 px, and at 600 PPI it is 4961 × 7016 px.
What is A4 size in pixels at 72 DPI?
A4 at 72 PPI is 595 × 842 pixels. This is screen resolution and is generally too low for high-quality printing, but it is useful for on-screen reference and web use.
What is A4 size in pixels at 96 DPI?
A4 at 96 PPI is 794 × 1123 pixels. This is standard screen resolution. It is not a typical print target, but the calculator above can show you the exact dimensions.
What is A4 size in pixels at 300 DPI?
A4 at 300 PPI is 2480 × 3508 pixels in portrait, or 3508 × 2480 in landscape. This is the most common target for high-quality close-viewed printing. The value comes from dividing A4's physical dimensions (210 × 297 mm) by 25.4 to get inches, then multiplying by 300.
What is A4 size in pixels at 600 DPI?
A4 at 600 PPI is 4961 × 7016 pixels — roughly 34.8 megapixels. This is very high resolution and is often more than ordinary A4 printing requires. It can be useful for heavy cropping or specialist output.
What is A4 size in pixels at 2400 DPI?
A4 at 2400 PPI is 19843 × 28063 pixels — roughly 556.9 megapixels. This is an ultra-high resolution that is generally unnecessary for ordinary A4 printing. Most consumer printers and camera sensors cannot usefully deliver this level of detail.
Why is A4 2480 × 3508 pixels at 300 DPI?
A4 measures 210 × 297 mm. Dividing by 25.4 (millimetres per inch) gives approximately 8.2677 × 11.6929 inches. Multiplying by 300 PPI gives 2480.3 × 3507.9, which rounds to 2480 × 3508 pixels. The pixel dimensions are derived from the physical size of A4 as defined in the ISO 216 standard, combined with the chosen pixel density.
How are A4 pixel dimensions calculated?
The formula is: pixels = round((millimetres / 25.4) × PPI). First convert A4's physical width or height from millimetres to inches by dividing by 25.4, then multiply by the target PPI and round to the nearest whole pixel. This is the same method used by the calculator on this page.
What DPI should I use for printing A4?
300 PPI is a common target for high-quality close-viewed prints. 240 PPI gives excellent quality for most purposes. 150 PPI is often acceptable for documents and prints viewed from some distance. The right choice depends on your printer, paper, viewing distance, and the quality of the source image. Use the print quality checker above to get a verdict for your specific file.
Practical details
At 300 PPI, A4 needs 2480 × 3508 pixels — roughly 8.7 megapixels. At 240 PPI, 1984 × 2806 pixels is still high quality. At 200 PPI, 1654 × 2339 pixels works well for most purposes. At 150 PPI, 1240 × 1754 pixels is usually enough for a document that will be read at arm's length rather than examined up close.
Because A4's ratio (1:1.414) is close to, but not exactly, the 3:2 of a typical photo, a full-bleed A4 print from a camera photo will usually need a small crop on the longest edges.
A4 is a portrait document size. It's used for letters, reports, CVs, menus and most everyday printing, where text and layout matter more than photo detail. For photos, A4 is an unusual target — a frame print is more likely to be 8×10 — so treat A4's pixel counts as the requirement for a document image or a full-page photo layout.
Want the next size up? A3 size in pixels is double the area. For the smaller step down, A5 size in pixels is half the area with the same aspect ratio. For the North American equivalent, US Letter size in pixels covers the 8.5 × 11 inch standard. For a quick resolution check on any image, the print quality checkergives a verdict for the exact size you're planning. If you're choosing a resolution for an A4 print, the best DPI for printing guide has the practical targets.