The A4 aspect ratio means 210 units wide for every 297 units tall (a decimal ratio of 0.71:1). Below are the exact A4 pixel sizes, a full dimensions table, and a free calculator to convert any A4 ratio to width × height.
A4 is an aspect ratio, not a fixed pixel size — any width and height that divide to 0.71 is A4. The most common A4 size is 2480 × 3508 px. To get exact pixels, use the calculator below, or multiply your chosen width by 297/210 to get the height.
| Use | Pixels (W × H) |
|---|---|
| A4 print (300 DPI) | 2480 × 3508 |
| A4 draft (150 DPI) | 1240 × 1754 |
| A4 screen (72 DPI) | 595 × 842 |
Every row below is a perfect A4 ratio. Pick the resolution you need, or enter your own numbers in the calculator.
| Tier | Width | Height | Pixels |
|---|---|---|---|
| SD | 360 | 509 | 360 × 509 |
| SD | 480 | 679 | 480 × 679 |
| HD | 720 | 1018 | 720 × 1018 |
| Full HD | 1080 | 1527 | 1080 × 1527 |
| Full HD | 1440 | 2037 | 1440 × 2037 |
| QHD+ | 2160 | 3055 | 2160 × 3055 |
Convert a ratio to pixels, pixels to a ratio, or resize while keeping A4 locked.
Common sizes for 9:16
Need to crop an image to A4?
Use the free A4 crop tool — it locks the crop box to A4 so the proportions are always exact.
A4 is a ratio, not a single size — any width and height that divide to 0.71 is A4. The most common A4 pixel size is 2480 × 3508. To get exact pixels, pick a width and multiply by 297/210 for the height (or use the calculator on this page).
A4 means the width is 210 units for every 297 units of height (a decimal ratio of 0.71:1). Popular A4 sizes are 2480 × 3508, 1240 × 1754, 595 × 842.
Enter any width in the calculator above and it returns the exact A4 height instantly (height = width × 297 ÷ 210), or enter a height to get the width. It also works in reverse: paste any pixel size and it tells you the ratio.
No. A4 and 297:210 use the same numbers but swapped, so one is landscape and the other portrait. A4 is taller than it is wide; 297:210 is the landscape version.
Use the free omnikitbolt crop tool: open it, choose the A4 preset, drag the box over the area to keep, and download. It locks to A4 so the proportions are always exact, and it runs 100% in your browser.
2:3 in pixels
The vertical version of 3:2 — perfect for Pinterest pins (1000×1500 px), portrait photo prints, and posters where height carries the composition.
3:4 in pixels
The portrait version of 4:3 — perfect for mobile portrait photos, e-commerce product shots, and vertical thumbnails that show more height than a square.
5:4 in pixels
The classic print ratio — perfect for 8×10 inch photo prints (the most common framed portrait size) and large-format photography.
4:3 in pixels
The classic standard — perfect for traditional photography, iPad and tablet screens, older monitors and TVs, and many presentation templates.
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