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.