Image Crop & Framing Calculator
Find out exactly how many pixels will be trimmed from the top, bottom, left, or right when fitting an image into a new aspect ratio.
Interactive Crop Analyzer
Select your source dimensions and target ratio to see exact trim pixels and live visual crop boundaries.
Drag and drop an image here, or browse
100% private. Stays directly on your machine.
Rendered via client-side HTML5 Canvas. Zero server uploads.
Common Cropping Scenarios
What happens to your images when reformatting for different social networks:
Converting a horizontal 1920×1080 video into a square 1080×1080 post requires trimming 840 pixels horizontally (420px from the left, 420px from the right). You retain 56.3% of the image.
Cropping a horizontal 1920×1080 shot to vertical 9:16 retains only 31.6% of the original frame (607×1080 px). Important subjects must be centered, or letterboxing should be used instead.
A standard 6000×4000 photo cropped to 4:5 produces 3200×4000 pixels, trimming 1400px from each side.