READY-TO-USE IMAGE TOOL
4:5 aspect ratio crop tool.
4:5 aspect ratio uses a 1080 × 1350 pixel frame (4:5). The calculator and local image crop below are already set to that shape, so you can enter dimensions or choose an image immediately.
This is an exact mathematical ratio, not a platform upload requirement. Your image stays in this browser.
Find the ratio
Enter your pixel dimensions. Whole-number dimensions reduce to an exact ratio.
Match a ratio
Set one dimension to find the other without stretching.
Matching height: 1350 px
Matching width: enter a height
Calculated values may have fractional pixels. Round to whole pixels when exporting a raster image.
Frame your image
Choose an image or drop it below. Drag the frame to position your crop; arrow keys move it too.
or drop a file here
No upload. The image never leaves your device; nothing is saved by this site.
Put this frame to work
Cropping a 1080 × 1920 portrait to 4:5 retains 1080 × 1350 and removes 570 pixels vertically. Move the frame to keep the subject rather than blindly trimming both ends.
Resizing preserves a source image's shape; cropping removes edges to fit a different one. Download the crop as PNG or JPEG above.
Common 4:5 pixel sizes
| Width | Height | Pixels |
|---|---|---|
| 864 | 1080 | 933,120 |
| 1080 | 1350 | 1,458,000 |
| 2160 | 2700 | 5,832,000 |
4:5 is slightly portrait: at the same width it is 25 percent taller than a square.
Frequently asked questions
What is 4:5 in pixels?
1080 × 1350 is the common portrait feed size; 864 × 1080 keeps 1080 pixels of height instead of width.
4:5 or 1:1 for posts?
A 4:5 portrait shows taller in a scrolling feed than a square of the same width. Platform display rules change, so check current guidance before exporting.
What size does the 4:5 aspect ratio page start with?
The calculator and crop frame start at 1080 × 1350 pixels, which reduces to 4:5. You can type any other width and height.
Is my image uploaded anywhere?
No. The image is decoded and exported in your browser, so no image data is sent to a server.
Which image formats can I use?
Choose a PNG or JPEG image, and download the result as PNG or JPEG.
Can I crop to a different ratio?
Yes. The crop ratio menu offers 16:9, 4:3, 1:1, 9:16, 21:9 and 3:2, and the calculator accepts any width and height.