4:3 aspect
ratio.
Four units wide. Three units high. A balanced rectangular frame for photographs, slides and graphic compositions. Calculate its dimensions, then see the frame at work.
What belongs inside the frame?
Drag the image to change the crop. Try your own photograph. The frame stays 4:3; the composition is yours.
Preview scaled to fit your screen. Pixel dimensions determine the downloaded PNG.
Set the 4:3 output.
No upload to a server. Your photo stays in this browser.
Open full Proportion Lab ↗Need JPEG, WebP, padding or multiple formats? Those tools are in the full editor. The image won't transfer automatically between pages.
A ratio, not a resolution.
4:3 describes the width relative to the height. It doesn't prescribe how many pixels an image contains. Multiply both sides by the same number and the shape stays identical.
To find the height of a 4:3 image, multiply its width by 3/4. To find the width, multiply its height by 4/3. If the result falls between whole pixels, choose the nearest value or an exactly divisible size.
For an upright frame, the proportions reverse: 3:4 is portrait, not landscape 4:3.
Common 4:3 dimensions.
| Width | Height | Typical context |
|---|---|---|
| 640 px | 480 px | Classic VGA |
| 800 px | 600 px | Small digital image |
| 1024 px | 768 px | Presentation / XGA |
| 1600 px | 1200 px | Photography / UXGA |
| 2048 px | 1536 px | Photography |
| 4000 px | 3000 px | 12 MP image |
What changes when 4:3 becomes something else?
One image, three frames. 4:3 stays the reference. The other shapes below show what can be retained without stretching or adding padding. Each is centered on the same point; for independently adjusted crops, use the full editor.
4:3 / —
16:9 / —
9:16 / —