Image File Size Calculator

Estimate JPG, PNG, WebP, AVIF and raw image sizes from dimensions and quality, or drop a real image to check its exact file size locally.

Width (px)Height (px)FormatImage content

Quality

Estimated JPEG size

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Compressed image size is a planning range, not an encoder promise.

—Megapixels

—Exact raw raster

—Estimated batch

—Target-size check

Drop a real image for exact file sizeReads the file only in this browser. Dimensions and encoded bytes can replace the estimate.

No fileExact encoded size

—Decoded dimensions

—Raw ÷ actual

Compare image formats

Same dimensions, content and quality assumption. Ranges show uncertainty instead of pretending compression is exact.

Raw/BMP are deterministic pixel payloads; encoded formats are estimates.

Format	Estimated size	Range	Relative to raw	Typical fit

More planning controls raw depth · print · storage · upload

Number of imagesTarget max size

ChannelsBits / channelPrint PPIStorage capacity (GB)Upload speed (Mbps)Website image countWebsite budget (KB)Row alignment

—Print size at selected PPI

—Images in storage plan

—Upload time / image

—Website budget

—Raw bits per pixel

—Aligned row stride

—Stride-aware buffer

—Planning resize for target

Ready.

What is exact vs estimated: width × height × channels × bits/channel is exact for the selected raw raster model. BMP/uncompressed pixel payload is deterministic apart from headers/row padding. JPEG, PNG, WebP, AVIF, TIFF and camera RAW file sizes depend on the actual pixels, encoder, metadata and settings, so this calculator shows a planning range. Dropping a real image reports that file’s exact encoded bytes. DPI/PPI metadata does not change file size unless pixel dimensions or pixel data change.

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.