Social Media Image Crop Calculator
Social Media Image Crop Calculator
Enter your image's pixel dimensions and choose a social media platform/format. This calculates the largest centered crop matching that platform's required aspect ratio, plus its offset from the top-left corner.
The crop keeps your image's full width or height — whichever is the limiting dimension — and crops the other dimension symmetrically down to match the target platform's required ratio, centering the result so nothing is cropped unevenly to one side. Since this always centers the crop, it's a great starting point whenever the main subject is already roughly centered in the source image, but if the subject sits off to one side you'll likely want to nudge the crop manually in an image editor afterward using the calculated dimensions as your starting reference.
- Formula: the crop keeps your image's full width or height (whichever is the limiting side) and crops the other dimension symmetrically to match the target ratio, centering the crop.
- Center-crop assumption: this centers the crop on your image — if your subject isn't centered, you may want to shift the crop manually in your editor rather than using these offsets exactly.
- Ratios used: Instagram Square 1:1, Instagram Portrait 4:5, Story 9:16, Facebook/LinkedIn Post 1.91:1, X Post and YouTube Thumbnail 16:9.
What if my crop offset is 0?
That means your image already matches (or is narrower/shorter than) the target platform's ratio on that axis, so no cropping is needed on that side.
Should I crop before or after resizing for upload?
Crop to the correct aspect ratio first, then resize down to the platform's recommended pixel dimensions — cropping after resizing risks losing resolution unnecessarily.
Social Media Image Crop Calculator
Enter your image's pixel dimensions and choose a social media platform/format. This calculates the largest centered crop matching that platform's required aspect ratio, plus its offset from the top-left corner.
The crop keeps your image's full width or height — whichever is the limiting dimension — and crops the other dimension symmetrically down to match the target platform's required ratio, centering the result so nothing is cropped unevenly to one side. Since this always centers the crop, it's a great starting point whenever the main subject is already roughly centered in the source image, but if the subject sits off to one side you'll likely want to nudge the crop manually in an image editor afterward using the calculated dimensions as your starting reference.
- Formula: the crop keeps your image's full width or height (whichever is the limiting side) and crops the other dimension symmetrically to match the target ratio, centering the crop.
- Center-crop assumption: this centers the crop on your image — if your subject isn't centered, you may want to shift the crop manually in your editor rather than using these offsets exactly.
- Ratios used: Instagram Square 1:1, Instagram Portrait 4:5, Story 9:16, Facebook/LinkedIn Post 1.91:1, X Post and YouTube Thumbnail 16:9.
What if my crop offset is 0?
That means your image already matches (or is narrower/shorter than) the target platform's ratio on that axis, so no cropping is needed on that side.
Should I crop before or after resizing for upload?
Crop to the correct aspect ratio first, then resize down to the platform's recommended pixel dimensions — cropping after resizing risks losing resolution unnecessarily.