READY-TO-USE IMAGE TOOL
Facebook cover photo size crop tool.
Facebook cover photo size uses a 851 × 315 pixel frame (851:315). The calculator and local image crop below are already set to that shape, so you can enter dimensions or choose an image immediately.
Common size as of 2026-09; platform display and upload rules can change. Check the platform before publishing. 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: 315 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
An 851 × 315 cover is about 2.70:1. From an 851 × 851 square, only 315 pixels of height remain; preview the central subject on both mobile and desktop.
Resizing preserves a source image's shape; cropping removes edges to fit a different one. Download the crop as PNG or JPEG above.
Frequently asked questions
What size does the Facebook cover photo size page start with?
The calculator and crop frame start at 851 × 315 pixels, which reduces to 851:315. You can type any other width and height.
Is 851 × 315 an official requirement?
No. Sizes on this site are common examples, not current platform upload specifications. Check the platform before you publish.
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.