BMP converter
Convert your BMP files to any format.
What is a BMP file?
BMP is Windows' raw bitmap format — pixel data stored uncompressed, which makes files enormous.
First released in 1990 by Microsoft, it uses lossless compression and no transparency, which makes it best suited to raw uncompressed bitmaps from Windows apps.
Drop a BMP file below and we'll show you every conversion available, each one processed locally on your device — nothing is uploaded to a server, so converting is instant and completely private.
Advantages of the BMP format
Uncompressed and lossless
Stores pixels exactly as they are, with no compression, so there is no loss of quality whatsoever.
Simple and universal
Its basic structure is understood by almost every Windows program without needing extra codecs.
Direct pixel access
Because it isn't compressed, it's straightforward to read and manipulate pixel by pixel in technical applications.
Convert BMP to…
Pick a target format — every BMP conversion runs instantly in your browser.
BMP: frequently asked questions
Why are BMP files so large?
Because they store every pixel uncompressed. Converting to PNG keeps the lossless quality but shrinks the size dramatically; converting to JPG shrinks it even further for photos.
Will I lose quality converting BMP to PNG?
No. Both are lossless formats, so the image stays identical — the PNG just takes up far less space.
Does BMP support transparency?
Classic BMP doesn't support transparency. If you need a transparent background, convert to PNG or WebP.
What is the BMP format still used for?
Mostly in Windows applications and technical environments where a raw, simple-to-process bitmap is preferred over a compressed file.