Social Media Aspect Ratio Checker

Upload an image or video—or type dimensions manually—and instantly see the exact ratio, reduced fraction, orientation, near-match errors, platform compatibility, target crop loss, and visual crop previews across the major social formats.

Exact, not rounded-onlyShows decimal ratio, reduced fraction, percentage error and “almost 4:5” mistakes that generic checkers miss.

Platform compatibility matrixInstagram, TikTok, YouTube, X, LinkedIn, Pinterest and Facebook formats in one view with source-confidence labels.

Crop-loss calculatorPick any target ratio and see exactly how much source area survives a center crop or how much padding a fit workflow needs.

Image + video metadataReads local image dimensions or browser-decodable video dimensions without uploading the file.

4:5 portrait

1080 × 1350 · exact 0.800000 ratio

Yellow = selected target crop · drag is not required; move focal point with sliders

Exact ratio fingerprint

4:5

0.800000PortraitExact common ratio

No ratio correction needed for a 4:5 target.

Target crop previews

1:1 square

4:5 portrait

9:16 vertical

These are center/focal crop simulations, not modified downloads.

Selected-target conversion cost

Source retained by crop100.0%

Source discarded0.0%

Fit padding axisNone

Nearest standard4:5

Exact ratio match.

Compatibility matrix

Platform	Placement	Ratio	Status

“Exact” means the source ratio matches; “Near” is within 1%; “Crop” means the listed format requires reframing.

Source1080 × 1350

Reduced ratio4:5

OrientationPortrait

Target4:5

Crop loss0.0%