4:3 aspect ratio
1.3333:1 · 1024×768 px · also called standard, 1.33:1, fullscreen
4:3 predates widescreen: it was the shape of broadcast television and remains the native ratio of many camera sensors and display units. At 1440×1080 px it gives more vertical room than 16:9 without becoming square.
What 4:3 means
A 4:3 frame is 1.3333 times wider than it is tall. Multiply the width by 3/4 to get the height. Common exact sizes: 640×480, 1024×768, 1440×1080, 2048×1536.
Where it is used
Google Display and email banners, product photography straight out of camera, in-app placements and legacy video libraries. Most social feeds crop it, so re-frame before uploading.
4:3 in pixels
Every row below is exactly 4:3. Divide the width by 1.3333 to get the height for any size not listed.
| Width (px) | Height (px) | Total pixels |
|---|---|---|
| 640 | 480 | 0.31 MP |
| 800 | 600 | 0.48 MP |
| 1024 | 768 | 0.79 MP |
| 1440 | 1080 | 1.56 MP |
| 2048 | 1536 | 3.15 MP |
4:3 in mm and inches
Physical equivalents at common print widths, with the pixel size needed for 300 DPI print.
| Width (mm) | Height (mm) | Inches | Pixels @ 300 DPI |
|---|---|---|---|
| 50 | 37.5 | 1.97″ × 1.48″ | 591×443 |
| 100 | 75 | 3.94″ × 2.95″ | 1181×886 |
| 150 | 112.5 | 5.91″ × 4.43″ | 1772×1329 |
| 210 | 157.5 | 8.27″ × 6.20″ | 2480×1860 |
| 297 | 222.8 | 11.69″ × 8.77″ | 3508×2631 |
Working with 4:3
- 01If your product photography is 4:3 out of camera, shoot loose so a 4:5 and 1:1 crop both survive.
- 02Do not upload 4:3 video to Reels or TikTok — pad or re-frame to 9:16 first.
- 03For email, 4:3 hero images balance well against a text column on desktop.
4:3 questions, answered
What is 4:3 in pixels?
1024×768 and 1440×1080 px are the most common exact 4:3 resolutions.
Is 4:3 good for ads?
Only for display and email. Social feeds prefer 1:1, 4:5 or 9:16.
What is 4:3 in decimal?
1.3333:1.
Free tools for 4:3
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