Image Crop Size Calculator

Enter source dimensions and a custom or common aspect ratio to see exact centered crop geometry before opening an image editor.

Centered crop geometry

Calculate the largest crop that matches a target ratio while retaining as much source area as possible.

Source width

Source height

Target ratio W

Target ratio H

—Largest crop

—Centered X, Y

—Pixels removed

—Area retained

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Crop margins —

Inspect dimensions Aspect ratio Print size Required pixels DPI metadata Crop geometry Resize image

Proportional crop preview

—Source ratio

—Target decimal

—Area removed

—Target orientation

This is centered geometry only. It does not inspect faces, text, or the important subject in the image.

Core image workflows

Use a flagship page for the highest-demand resize, compression, crop and conversion jobs; specialist image tools remain available from the full hub.

All 55 image tools

Image ResizerResize by pixels or percentage Image CompressorReduce file size with controls Image CropperCrop visually or by coordinates Image ConverterConvert JPG, PNG and WebP JPG to PNGConvert JPEG into PNG PNG to JPGExport PNG as JPEG HEIC to JPGConvert phone HEIC/HEIF photos WebP to JPGExport WebP as JPEG

Browser-local limits

Canvas-based export is browser dependent. PNG is broadly available; JPEG/WebP quality and support can vary, and metadata may not be preserved through canvas re-encoding.