4:3 aspect ratio in pixels
A 4:3 frame is 1.33 times as wide as it is tall. To get the height, multiply the width by 0.75. To get the width, multiply the height by 1.333:
| Width | Height at 4:3 | Name |
|---|---|---|
| 640 | 480 | VGA |
| 800 | 600 | SVGA |
| 1024 | 768 | XGA |
| 1440 | 1080 | 4:3 at 1080 px tall |
| 1600 | 1200 | UXGA |
| 2048 | 1536 | QXGA, Retina iPad |
| 4032 | 3024 | 12 MP phone photo |
Widths that divide by 4 always give a whole-number height (800 → 600, 2000 → 1500). Other widths round to the nearest pixel, a difference too small to see.
4:3 aspect ratio calculator
The calculator at the top of the page does the math both ways and flips to 3:4 for portrait. By hand:
- Height from width: width × 3 ÷ 4. A 1920 px wide image is 1440 px tall at 4:3.
- Width from height: height × 4 ÷ 3. A 1080 px tall image needs to be 1440 px wide.
- Is my image 4:3? Divide the width by the height. 1.33 means 4:3, 1.5 means 3:2 and 1.78 means 16:9.
Where 4:3 still shows up
Phone photos are usually 4:3 at full resolution: a standard 12 MP iPhone or Android photo comes out at 4032 × 3024, and switching the camera to 16:9 crops away the top and bottom of that frame. Micro Four Thirds cameras are named after the same shape. Classic iPads have a 4:3 screen (2048 × 1536 on the Retina models), and older projectors, PowerPoint decks and standard-definition TV were all 4:3.
So if you're cropping a phone photo to 4:3, you often aren't changing its shape at all. You're straightening it, reframing it or trimming a messy edge.
4:3 vs 16:9 vs 3:2
| Ratio | Width ÷ height | Typical source | Example size |
|---|---|---|---|
| 4:3 | 1.33 | Phone cameras, iPads, older slides | 1600 × 1200 |
| 3:2 | 1.50 | DSLR and mirrorless cameras, 4 × 6 in prints | 6000 × 4000 |
| 16:9 | 1.78 | Video, TVs, YouTube, modern slides | 1920 × 1080 |
Moving between them always costs something. Cropping a 16:9 frame to 4:3 keeps 75% of the width (1920 × 1080 becomes 1440 × 1080). Going the other way, a 4032 × 3024 phone photo cropped to 16:9 keeps 75% of the height (4032 × 2268). A 3:2 camera file loses about 11% of its width at 4:3 (6000 × 4000 becomes 5333 × 4000). The longer comparison is in 4:3 vs 16:9, and the 16:9 cropper handles widescreen.
How to crop an image to 4:3
- Drop a photo onto the tool, paste one with Cmd/Ctrl+V, or load the sample.
- Choose landscape (4:3) or portrait (3:4). Drag to position, pinch or scroll to zoom, and use the arrow keys for small moves. The rule-of-thirds grid helps you place a horizon or a face.
- Pick the output size. Full resolution keeps the largest 4:3 area your photo allows, or choose a standard size such as 1024 × 768.
- Pick JPG, PNG or WebP, check the file size shown, then download or copy it.
Screenshots, group photos and documents often don't survive a crop. Switch to Fit whole image and the entire picture sits inside the 4:3 frame, with a blurred copy, white, black, a color you pick, or transparency around it.
Why your 4:3 image looks stretched or cut off
- Stretched: a basic resizer squashed it. Typing 1024 × 768 into one forces a 16:9 picture into 4:3 and makes faces wide. Cropping keeps circles round.
- Cut off when printed: a 4 × 6 print is 3:2, so the lab trims the long edges of a 4:3 photo or adds white bars. Crop to 3:2 first, or fit the image with a white fill.
- Blurry: a tight crop from a small image has to be enlarged to reach a standard size. The tool warns before it exports an upscaled image.
Portrait 3:4
Flip the orientation and you get 3:4, the same shape standing up. It's now a useful social size: Instagram's profile grid switched to 3:4 tiles in 2025, so a 1080 × 1440 post shows on your grid without any trimming. The Instagram post size page has that preset ready.
