Resolution Scale Calculator

Enter an original resolution and scale percentage to calculate the proportional output dimensions and pixel-count change.

Original width

Original height

Scale

Frame fit, crop & pixel-workload audit

Compare source and target aspect ratios, contain/cover scales and pixel workload before rendering.

Resolution evidence

Target width

Target height

Plan	Scale	Rendered frame	Extra/crop

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

Practical guide and verification

Scaling changes two dimensions

If both width and height are multiplied by the same scale factor, pixel count changes by the square of that factor. A 50% linear scale produces one quarter as many pixels, not half.

Preserve aspect ratio deliberately

Uniform scaling keeps the original shape. Changing width and height by different percentages distorts the image unless a crop or non-square pixel workflow is intended.

Common mistake

A larger pixel dimension does not create new source detail. Upscaling interpolates additional pixels and may improve compatibility or presentation, but it cannot recover information that was never captured.

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.