Calculate Aspect Ratio

4:3 Aspect Ratio Calculator

Need to find the right size for a 4:3 project? Just enter the width or height in pixels below, and this calculator will instantly find the other dimension for you.

The result will show as you type.

What is the 4:3 Aspect Ratio?

The 4:3 aspect ratio is a rectangle that's a little wider than it is tall. For every 4 inches across, it's 3 inches tall. Old TVs and computer monitors used this shape, so it can give a cozy, old‑school feeling to videos and photos.

Today, most TVs and phones use a wider 16:9 ratio, but 4:3 is still very common. Many tablets, including Apple's iPads, have 4:3 screens because the shape feels natural for reading, browsing the web, and looking at photos. That means you might be using a 4:3 screen every day without even knowing it!

Calculating 4:3 Pixel Size

This calculator makes it super easy to get the exact 4:3 pixel size for any job.

Common 4:3 Resolutions

A diagram showing the 4:3 Aspect Ratio shape

Here is a list of common 4:3 resolutions, from smallest to largest:

Those long names (like VGA or XGA) are just old computer monitor labels. Don't worry about remembering them; the numbers are what matter.

While the most popular screen resolution today is 1920x1080 (16:9), many classic monitor sizes like 1024x768 are still used in specific applications and on some tablets.

Where You Still See 4:3 Today

You might think 4:3 is only for old stuff, but it's still everywhere:

So even in a world of ultra‑wide screens, the simple 4:3 rectangle still has a comfy home in our pockets and backpacks.