FreeNo uploadNo sign-upBatch
JPG to BMP Converter
Convert JPG to an uncompressed BMP bitmap for legacy software.
Drop JPG files here
batch and mixed formats welcome
- Private by design. Converted inside your browser.
- Instant. No upload queue, no waiting.
- Unlimited. Convert hundreds of files, download as ZIP.
How to convert JPG to BMP
Add your JPG files
Drop them on the converter, click Choose files or paste from the clipboard. You can add as many as you like.
Adjust the settings
No settings needed. The BMP is saved as a standard 24-bit bitmap.
Download your BMP files
Each file converts automatically. Save files one by one or all at once as a ZIP.
Why convert JPG to BMP?
JPG is the most widely supported photo format. It uses adjustable lossy compression, so photos stay small enough to share, upload and email.
BMP is still required by some older Windows programs, embedded devices and simple tools that cannot read compressed formats.
JPG vs BMP
| JPGJPEG image | BMPBitmap image | |
|---|---|---|
| Type | Raster photo | Raster image |
| Compression | Lossy, adjustable quality | Usually none |
| Transparency | Not supported | Rare |
| Animation | Not supported | Not supported |
| Support | Every device, browser, app and website | Windows and most viewers |
| Best for | Photos you need to share, upload or print | Legacy software and simple tools |
Frequently asked questions
Does JPG to BMP lose quality?
No. BMP stores every pixel without compression. Transparency is replaced by the background colour because 24-bit BMP has no alpha channel.
Can I convert many JPG files at once?
Yes. Add as many files as you like; each one converts automatically and you can download them all as a ZIP.
Are my files uploaded to a server?
No. formatmath converts files with code that runs inside your browser. Your files are never uploaded, stored or seen by us.
Is it free?
Yes. There is no watermark and no daily limit. An account is optional and only keeps a history of your conversions.