4:3 Aspect Ratio Calculator
4:3 is a classic landscape ratio used by older displays, cameras, presentations and standard-definition video. Enter a width or height and AspectRatioZ calculates the matching 4:3 dimension instantly.
Calculate 4:3
About the 4:3 aspect ratio
4:3 is a classic landscape ratio used by older displays, cameras, presentations and standard-definition video.
The ratio means that for every 4 units of width, there are 3 units of height. For example, 1440 × 1080 keeps the same shape at any scale.
Common uses include classic photos, older displays and presentations. The pixel dimensions can change while the 4:3 relationship stays the same.
Common 4:3 sizes
| Width | Height | Ratio |
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FAQ
What is 4:3?
4:3 is a classic landscape ratio used by older displays, cameras, presentations and standard-definition video.
What is a common 4:3 resolution?
A common working example is 1440 × 1080. Use the calculator above to create other dimensions without changing the shape.
Can I scale a 4:3 image or video?
Yes. Keep width and height proportional. Changing one dimension and recalculating the other preserves the 4:3 aspect ratio.