Convert BMP to ICO Free Online
Fast, private BMP to ICO conversion. No signup required. Files never leave your browser until conversion.
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Multiple files supported · Max 20 MB each
Private
Files never stored
Batch
Multiple at once
Lossless
Quality control
Why Convert BMP to ICO?
Converting BMP to ICO is a natural transition since ICO is essentially an enhanced BMP with multi-resolution support, designed for icons and favicons.
Common Use Cases
- Creating favicons from BMP graphics
- Windows application icons
- Desktop shortcut icons
Source Format
BMP
Bitmap Image File
BMP is an uncompressed raster image format native to Windows. It stores pixel data directly without compression, resulting in large file sizes but perfect quality.
+ No compression means zero quality loss
+ Simple format, easy to read and write programmatically
+ Native Windows support
- Extremely large file sizes
- No transparency support
Target Format
ICO
Icon File Format
ICO is the standard icon format for Windows applications and website favicons. It can store multiple image sizes in a single file, typically up to 256x256 pixels.
+ Standard format for favicons and Windows icons
+ Stores multiple resolutions in one file
+ Transparency support
- Maximum size of 256x256 pixels
- Limited to icon use cases
Quality & Size Notes
ICO is limited to 256x256 pixels. Larger BMP images will be resized. Both formats share similar underlying pixel storage.
Frequently Asked Questions
Are BMP and ICO related formats?
Yes! ICO internally uses BMP-like pixel storage. They're closely related, making BMP to ICO a very natural conversion.
What size should my BMP be?
For favicons, 32x32 or 64x64 is ideal. For Windows application icons, 256x256 is the maximum.
Will transparency be added?
ICO supports transparency, but since BMP doesn't have transparency data, no transparent areas will be created automatically.