BMP to ICO converter
Turn BMP files into ICO for free. The conversion runs entirely in your browser, so your pictures are never uploaded anywhere.
How to convert BMP to ICO
- Add your BMP files. Drop one or more .bmp files on the box above, or tap it to pick them from your device.
- Let it convert. Each picture is converted to ICO in about a second, right in your browser.
- Download the ICO. Press Download next to each file. Nothing was sent to a server, so close the tab and it's gone.
What is a BMP file?
BMP is the old uncompressed Windows bitmap format. It stores raw pixels, so files are huge but simple.
What is ICO?
ICO is the icon format used for website favicons and Windows app icons. One ICO file holds several sizes of the same icon (16, 32, 48, 64, 128 and 256 pixels).
Why convert BMP to ICO?
BMP is great for very old software and some industrial tools, but enormous files and almost no web support. ICO is the better choice for favicons and desktop icons; keep in mind only useful as an icon.
Will I lose quality?
No. ICO is lossless, so every pixel that BMP gave us is kept exactly.
Private by design
Most online converters upload your file to their servers. This one doesn't: the converter itself is loaded into your browser and works offline from there, so your pictures never leave your phone or computer.
Questions
Is this BMP to ICO converter free?
Yes, completely free, with no sign-up, no watermark and no daily limit.
Are my BMP files uploaded?
No. The conversion happens inside your browser on your own device. Nothing is sent to us or anyone else.
Can I convert BMP to ICO on iPhone or Android?
Yes. It works in Safari, Chrome and other modern browsers on phones and tablets.
Can I convert several files at once?
Yes. Drop as many as you like; they are converted one after another and each gets its own download button.
Is there a file size limit?
No fixed limit. Very large pictures (100+ megapixels) may be slow on phones.