Classic and photography calculator
4:3 Aspect Ratio Calculator (and 3:4 Portrait)
Calculate matching 4:3 landscape and 3:4 portrait dimensions, compare common pixel sizes, and preview whether a widescreen frame should be cropped or letterboxed.
Ratio preview
Photography, 8 × 6 prints, projectors, presentation capture, tablets, classic television, retro video, and portrait social crops.
Calculate 4:3 dimensions
Enter width or height. The matching dimension updates automatically to keep the 4:3 shape.
4:3 result
1,600 × 1,200
4:3 ratio
- Decimal
- 1.333:1
- Orientation
- Landscape
- CSS
- aspect-ratio: 4 / 3;
Common 4:3 sizes
| Use | Size | Note |
|---|---|---|
| XGA landscape | 1024 × 768 | Common legacy display and projector format. |
| UXGA landscape | 1600 × 1200 | Four-megapixel 4:3 image or presentation export. |
| Tablet landscape | 2048 × 1536 | High-density tablet and photography frame. |
| Portrait image | 1200 × 1600 | The inverse 3:4 orientation for photos and prints. |
| Portrait high resolution | 1536 × 2048 | High-density 3:4 portrait image. |
| Print master | 2400 × 3200 | 3:4 portrait master suitable for an 8 × 6-inch shape. |
Best uses
Direct answer
What is the 4:3 aspect ratio?
The 4:3 aspect ratio is a landscape frame that is four units wide for every three units high; its rotated portrait version is 3:4. Common exact sizes include 1024 × 768, 1600 × 1200, and 2048 × 1536. It is widely used for photography, tablets, projectors, prints, and classic video.
Find height
height = width × 3 ÷ 4
Find width
width = height × 4 ÷ 3
| Concept | What it describes | Example |
|---|---|---|
| Aspect ratio | The proportional shape of a frame | 4:3 |
| Resolution | The number of pixels in that frame | 1024 × 768 |
Crop and placement check
For a 16:9 destination, “fit” preserves the complete 4:3 frame with side bars; “fill” removes content from the top and bottom. Rotate to 3:4 for portrait photography and print workflows.
How to use 4:3
Choose 4:3 landscape or rotate to 3:4 portrait
Start with the orientation of the final photo, projector, tablet, or print. Use 4:3 for landscape and swap the values for 3:4 portrait. When the destination is 16:9, preview both fit and fill so the crop or side bars are deliberate.
Frequently asked questions
What is the difference between 4:3 and 3:4?
They describe the same rectangular shape in different orientations. 4:3 is landscape, while 3:4 is portrait.
Is 1600 × 1200 a 4:3 resolution?
Yes. Dividing both dimensions by 400 simplifies 1600:1200 to 4:3.
How does 4:3 fit inside 16:9?
Fit adds vertical bars at the sides. Fill removes content from the top and bottom. The best choice depends on whether preserving the complete frame or filling the screen matters more.
Is 4:3 useful for printing photos?
Yes. The shape maps naturally to 8 × 6 and 12 × 9 prints. Other print sizes may require cropping or borders.
Review record
Sources and review date
Last reviewed August 1, 2026. Calculations use the width-to-height relationship shown on this page.
More ratio calculators
Continue with another ratio
Use dedicated pages when you know the final placement or content shape.
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Related guides
Use these supporting guides to understand the tool result and next testing steps.
Related tools
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Internal references: Continue with the device viewport database, browse screen comparisons, or read the screen and viewport guides.