The 4:3 aspect ratio means 4 units wide for every 3 units tall (a decimal ratio of 1.33:1). Below are the exact 4:3 pixel sizes, a full dimensions table, and a free calculator to convert any 4:3 ratio to width × height.
4:3 is an aspect ratio, not a fixed pixel size — any width and height that divide to 1.33 is 4:3. The most common 4:3 size is 2048 × 1536 px. To get exact pixels, use the calculator below, or multiply your chosen width by 3/4 to get the height.
| Use | Pixels (W × H) |
|---|---|
| iPad wallpaper | 2048 × 1536 |
| SD / classic display | 1024 × 768 |
Every row below is a perfect 4:3 ratio. Pick the resolution you need, or enter your own numbers in the calculator.
| Tier | Width | Height | Pixels |
|---|---|---|---|
| SD | 480 | 360 | 480 × 360 |
| SD | 640 | 480 | 640 × 480 |
| HD | 960 | 720 | 960 × 720 |
| Full HD | 1440 | 1080 | 1440 × 1080 |
| Full HD | 1920 | 1440 | 1920 × 1440 |
| QHD+ | 2880 | 2160 | 2880 × 2160 |
Convert a ratio to pixels, pixels to a ratio, or resize while keeping 4:3 locked.
Common sizes for 9:16
Need to crop an image to 4:3?
Use the free 4:3 crop tool — it locks the crop box to 4:3 so the proportions are always exact.
4:3 is a ratio, not a single size — any width and height that divide to 1.33 is 4:3. The most common 4:3 pixel size is 2048 × 1536. To get exact pixels, pick a width and multiply by 3/4 for the height (or use the calculator on this page).
4:3 means the width is 4 units for every 3 units of height (a decimal ratio of 1.33:1). Popular 4:3 sizes are 2048 × 1536, 1024 × 768.
Enter any width in the calculator above and it returns the exact 4:3 height instantly (height = width × 3 ÷ 4), or enter a height to get the width. It also works in reverse: paste any pixel size and it tells you the ratio.
No. 4:3 and 3:4 use the same numbers but swapped, so one is landscape and the other portrait. 4:3 is wider than it is tall; 3:4 is the portrait version.
Use the free SammaPix crop tool: open it, choose the 4:3 preset, drag the box over the area to keep, and download. It locks to 4:3 so the proportions are always exact, and it runs 100% in your browser.
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.
16:9 in pixels
The widescreen standard — perfect for YouTube thumbnails and videos (1280×720, 1920×1080), presentation slides, desktop wallpapers, and any 16:9 display or player.
1:1 in pixels
The classic square — perfect for Instagram feed posts, profile pictures and avatars, album covers, and product thumbnails that display as a square.
3:2 in pixels
The native ratio of most DSLR and mirrorless cameras and 35mm film — perfect for photography and standard photo prints (4×6, 6×9 inches).