Convert ICO to BMP
Free, instant and private — your ICO files are converted right in your browser and never uploaded to a server.
How to convert ICO to BMP
- Step 01
Add your ICO files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
It runs in your browser using its built-in image engine — no upload, no queue, no waiting.
- Step 03
Download your BMP files
Save each file individually or grab them all at once. Done.
Why convert ICO to BMP?
Some old Windows software, embedded tools and legacy pipelines only accept the uncompressed BMP format. Converting the image inside an .ico to BMP extracts it and repackages every pixel into that simpler container — readable by software that's never heard of the ICO container format. It happens entirely in your browser; nothing is uploaded.
ICO vs BMP at a glance
ICO is the Windows icon container — bundles several sizes in one file, still the format browsers expect for favicon.ico. BMP is Windows' raw bitmap format — pixel data stored uncompressed, which makes files enormous.
| Property | ICO | BMP |
|---|---|---|
| Extension | .ico | .bmp, .dib |
| Full name | Windows Icon | Bitmap Image File |
| First released | 1985 | 1990 |
| Developed by | Microsoft | Microsoft |
| Compression | Lossless | Lossless |
| Transparency | Yes | No |
| Animation | No | No |
| Best for | favicons and Windows application icons | raw uncompressed bitmaps from Windows apps |
ICO to BMP — frequently asked questions
Is this ICO to BMP converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Are my ICO files uploaded to a server?
No. The conversion happens entirely on your device using your browser's built-in image engine. Your ICO files never leave your computer or phone — which is also why the conversion is nearly instant.
What happens to transparent areas?
BMP doesn't support transparency, so transparent pixels are filled with a solid white background during conversion.
Which size is extracted from the ICO?
An ICO can hold several sizes; we export the one your browser decodes — typically the largest available — as a BMP.
What happens to transparency?
BMP doesn't support transparency, so transparent areas in the icon are filled with a solid white background during conversion.
Related conversions
- ICO to JPG
- ICO to PNG
- ICO to PDF
- ICO to WEBP
- ICO to AVIF
- ICO to HEIC
- ICO to GIF
- ICO to BMP
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- ICO to PSD
Need the reverse? Convert BMP to ICOExplore the BMP converter