ICO to BMP Converter
Convert ICO to BMP free — no upload, no signup
To convert ICO to BMP, drop your ICO images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. Get a plain Windows bitmap from an icon file.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
No settings needed — BMP output keeps every pixel. Options are under Advanced.
Advanced
Leave empty to keep the original size.
How to convert ICO to BMP
Add your ICO files
Drag and drop ICO files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
Pick a background
BMP has no transparency; transparent areas use white unless you choose another colour under Advanced.
Convert and download
Click Convert, then download each BMP or get them all in one ZIP.
Why convert ICO to BMP?
Classic Windows resource editors and some older programming tools work with BMP rather than ICO. This extracts the icon artwork in that simple format.
Does converting ICO to BMP affect quality or size?
The largest icon is decoded and written as a 24-bit BMP; transparent areas get a solid background colour you can choose under Advanced.
What's the difference between ICO and BMP?
ICO is the Windows icon format and the classic favicon.ico. One ICO file holds several square images (16 to 256 px) so each screen can use the sharpest size.
BMP is Microsoft's uncompressed bitmap format. It's simple and lossless but huge: every pixel is stored raw, so a 12-megapixel photo takes about 36 MB.
Learn more: ICO format guide · BMP format guide
| Property | ICO | BMP |
|---|---|---|
| Compression | PNG or uncompressed bitmap entries | Usually none (optional RLE) |
| Transparency | Yes | Rarely (32-bit only) |
| Animation | No | No |
| Colour depth | Up to 32-bit + alpha | 1 to 32-bit |
| Typical size, 12 MP photo | Max 256 × 256 px | ≈ 36 MB |
| Support | All browsers (favicons), Windows | Windows, most editors, all major browsers |
| Best for | Favicons, Windows app and shortcut icons | Legacy Windows software, embedded displays |
| Introduced | 1985 | 1985 |
Frequently asked questions
Which size from the ICO is used?
The largest image the ICO contains — typically 256 × 256 or 48 × 48 pixels — so the bitmap is as detailed as possible.
Isn't an ICO already a BMP?
Older ICO files store bitmap data inside, but without the BMP file header and with a separate transparency mask. Fylo turns it into a standalone .bmp any program can open.
Can I choose the background colour?
Yes. Open Advanced and pick any colour; white is the default.
Are my ICO files uploaded to a server?
No. Fylo converts ICO to BMP entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
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