Convert BMP to ICO online in seconds — free, with no sign-up. ICO is lossless and ideal for website favicons and Windows app icons. Your files are encrypted and deleted automatically after 24 hours.
BMP
Bitmap — An uncompressed legacy Windows format that produces very large files.
ICO
Icon — A container format for small icons at multiple sizes, used for favicons and app icons.
How to convert BMP to ICO
- 1Upload your BMP file
Click “Choose a file” or drag and drop your BMP file onto the page — no sign-up or email needed.
- 2Convert to ICO
ICO is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your ICO file
Your ICO file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
BMP vs ICO
| BMP | ICO | |
|---|---|---|
| Full name | Bitmap | Icon |
| Type | Raster image | Raster image |
| Compression | Lossless | Lossless |
| Best for | legacy compatibility; usually better converted to PNG or JPG | website favicons and Windows app icons |
Frequently asked questions
Does converting BMP to ICO lose quality?
No. Both BMP and ICO are lossless, so every detail is preserved exactly — the conversion is visually and mathematically identical to the original.
What's the difference between BMP and ICO?
Bitmap (BMP) is lossless and best for legacy compatibility; usually better converted to PNG or JPG. Icon (ICO) is lossless and best for website favicons and Windows app icons. Convert BMP to ICO when you need a raster image for website favicons and Windows app icons.
Is the BMP to ICO converter free?
Yes — converting BMP to ICO is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my BMP files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert BMP to ICO on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert BMP to ICO?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert BMP files to?
Besides ICO, you can convert BMP to AVIF, GIF, JPG, PDF, PNG, PPM and more — see the full list of BMP conversions below.
Other conversions
Last updated July 2026