BMP to ICO
Convert BMP files to ICO in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert BMP to ICO?
- ICO supports a transparent background — for logos, icons and stickers.
- Use the image as a website favicon or a Windows icon.
You don't need to install any software to convert BMP to ICO. Upload your file, choose ICO and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
BMP vs ICO: comparison
| Feature | BMPWindows Bitmap | ICOWindows Icon |
|---|---|---|
| Developer | Microsoft | Microsoft |
| Released | 1987 | 1985 |
| Type | image | image |
| Compression | uncompressed | lossless |
| Transparency | ✗ no | ✓ yes |
| Animation | ✗ no | ✗ no |
| Opens with | Paint, Photos (Windows), Photoshop | Windows, Chrome, GIMP |
Tip: use Options to change quality and width and make the file smaller.
How it works
- Choose or drop your BMP file.
- Pick ICO as the output format.
- Click “Convert” and download your file.
BMP to ICO: questions and answers
Will quality be lost when converting BMP to ICO?
No. ICO stores data without loss, so the result matches the original.
How long does BMP to ICO conversion take?
Usually 1–10 seconds. Several files are processed in parallel.
What is the maximum BMP file size?
Up to 30 MB per file and up to 20 files at once — for free.
Can I convert BMP to ICO on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a ICO file?
ICO files open in: Windows, Chrome, GIMP.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert ICO to BMP →