4:3 Aspect Ratio Calculator + Bulk Resizer
Work out any 4:3 dimension, then resize or crop a whole folder of images to match — free, in your browser.
Work out any 4:3 dimension, then resize or crop a whole folder of images to match — free, in your browser.
The 4:3 aspect ratio, also known as "fullscreen" or "standard," was the dominant format for television and computer monitors until the mid-2000s. It remains widely used for tablets like the iPad, security cameras, and certain professional applications. For every 4 units of width, there are 3 units of height.
| Resolution | Name | Category | Megapixels | Resize to this size |
|---|---|---|---|---|
| 640x480 | VGA | Screen | 0.3 MP | Resize to this — 640 by 480 pixels, VGA |
| 800x600 | SVGA | Screen | 0.5 MP | Resize to this — 800 by 600 pixels, SVGA |
| 1024x768 | XGA | Screen | 0.8 MP | Resize to this — 1024 by 768 pixels, XGA |
| 1600x1200 | UXGA | Screen | 1.9 MP | Resize to this — 1600 by 1200 pixels, UXGA |
| 2048x1536 | iPad Retina | Screen | 3.1 MP | Resize to this — 2048 by 1536 pixels, iPad Retina |
| 2732x2048 | iPad Pro 12.9" | Screen | 5.6 MP | Resize to this — 2732 by 2048 pixels, iPad Pro 12.9" |
| 1400x1050 | SXGA+ | Screen | 1.5 MP | Resize to this — 1400 by 1050 pixels, SXGA+ |
| 1920x1440 | Security Camera HD | Video | 2.8 MP | Resize to this — 1920 by 1440 pixels, Security Camera HD |
Apple iPads use 4:3 for optimal reading and browsing experience
Standard definition TV content, vintage films, and retro gaming
Many CCTV and surveillance systems use 4:3 for wider vertical coverage
Classic PowerPoint format, still used for projectors and older displays
Early television adopted 4:3 because it was already the standard aspect ratio for 35mm silent films. The Academy of Motion Picture Arts and Sciences had established this ratio in 1932, so TV inherited it for compatibility with existing film content.
For some tasks, yes. The taller format of 4:3 provides more vertical space for reading documents, coding, and web browsing. This is why iPads and some professional monitors still use 4:3 or similar ratios like 3:2.
Use 16:9 for video content, widescreen presentations, and most modern displays. Use 4:3 for iPad apps, legacy content, security systems, or when you need maximum vertical space in a rectangular format.
The most common method is pillarboxing - adding black bars on the left and right sides. This preserves the original content without distortion. Some TVs offer a "stretch" mode but this distorts the image.
Standard iPads use 2048x1536 (4:3 ratio), iPad Pro 11" uses 2388x1668 (close to 4:3), and iPad Pro 12.9" uses 2732x2048 (also 4:3). All maintain the classic 4:3 aspect ratio.