UnlimitedConvert
ICO to BMP Converter
Turn ICO files into BMP in seconds. Everything happens on your device: nothing is uploaded, and there's no limit.
Your images are processed in this browser tab and never uploaded.
Why convert ICO to BMP?
ICO files are hard to edit or preview outside Windows.
Some older programs, printers and embedded devices only accept uncompressed BMP files.
What to expect
- BMP has no transparency, so transparent areas become white.
- BMP is uncompressed, so the file will be much larger than the original.
How to convert ICO to BMP
Add your files
Drop your ICO files into the box or tap “select files”. Add as many as you like.
Pick the options
Pick the background colour used for transparent areas.
Convert and download
Press Convert. Download each BMP on its own, or everything at once as a ZIP file.
ICO vs BMP
| ICO | BMP | |
|---|---|---|
| Full name | Windows Icon | Windows Bitmap |
| Compression | Lossless | Lossless |
| Transparency | Yes | No |
| Animation | No | No |
| Best for | website favicons and Windows app icons | old Windows programs, embedded devices and tools that require uncompressed images |
| Support | Used by all browsers for favicons and by Windows for icons. | Opens on Windows, macOS and most image editors. |
About the formats
ICO (Windows Icon, 1985) is the icon format used by Windows and by website favicons. One ICO file can hold several sizes (16×16 up to 256×256), so the right one is shown in tabs, desktops and taskbars.
BMP (Windows Bitmap, 1990) is a simple, uncompressed Windows format. Files are large because every pixel is stored as-is, but almost any program, including very old software and embedded devices, can read it.
Frequently asked questions
How do I convert ICO to BMP?
Drop your ICO files into the box above (or tap Select files), check the options, then press Convert. Each BMP downloads on its own, or you can download them all as one ZIP file.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser on your own device. Your ICO files are never sent to a server, so they stay private, and it works even on a slow connection once the page has loaded.
Is there a limit on how many ICO files I can convert?
No. Convert as many as you like, for free, without signing up. Very large batches are processed one after another so your browser stays responsive.
Will I lose quality converting to BMP?
No. BMP is lossless, so the converted image keeps every pixel of the original.
Does it work on iPhone and Android?
Yes. It works in Safari, Chrome, Firefox and Edge on phones, tablets and computers. Nothing to install.