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Convert BMP to ICO Online

Swap Formats

Convert BMP files to ICO instantly in your browser. Free, fast, and 100% private - your files never leave your device. No account or software required. Supports batch conversion and custom settings.

Choose BMP files or drag & drop

Multiple files supported · No file size limit

100% PrivateNo UploadFree

Conversion Settings

90%
Smaller fileHigher quality
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How to Convert BMP to ICO - 3 Simple Steps

1

Upload Your BMP File

Drag and drop your BMP file into the upload area above, or click to browse your device. You can upload multiple files at once for batch conversion.

2

Adjust Settings

Set your preferred quality, resize dimensions, or other format-specific options. The default settings are optimized for the best ICO output.

3

Download ICO File

Click Convert and your ICO file is ready instantly. Download individual files or click "Download All as ZIP" for batch results.

BMP vs ICO — Format Comparison

FeatureBMPICO
File SizeVery large (uncompressed)Very small (icon sizes)
CompressionLosslessLossless
Transparency (Alpha)✗ Not supported✓ Supported
Animation✗ Not supported✗ Not supported
Vector-based✗ No (raster)✗ No (raster)
Browser SupportChrome, Firefox, Edge (limited Safari)All major browsers (for favicons)
Best ForWindows applications, uncompressed image storageApplication icons, favicons, Windows desktop icons

Also Convert BMP to:

BMP → PNGBMP → JPGBMP → JPEGBMP → WEBPBMP → GIFBMP → TIFF

Convert Other Formats to ICO:

PNG → ICOJPG → ICOJPEG → ICOWEBP → ICOGIF → ICOTIFF → ICOSVG → ICOAVIF → ICO

Why Use ConvertTheFile for BMP to ICO?

🔒

100% Private

Files are converted in your browser and never uploaded to any server.

⚡

Instant Conversion

No waiting for uploads or server processing. Results are instant.

🆓

Completely Free

No limits, no watermarks, no account required - forever free.

📦

Batch Conversion

Convert multiple files at once and download them as a ZIP archive.

Frequently Asked Questions — BMP to ICO Converter

How do I convert BMP to ICO online?
Upload your BMP file by dragging it into the upload area or clicking to browse your files. Adjust quality and resize options as needed, then click Convert. Your ICO file will be ready to download in seconds — no account or software required.
Is it safe to convert BMP files to ICO online?
Completely safe. This converter runs entirely in your browser. Your BMP files are never uploaded to any server — conversion happens locally on your device using browser APIs. Files are not stored or shared.
What is the difference between BMP and ICO?
ICO supports transparent backgrounds while BMP does not. BMP is best for: Windows applications, uncompressed image storage. ICO is best for: Application icons, favicons, Windows desktop icons.
Is this BMP to ICO converter free?
Yes, completely free with no limits. There is no registration, no watermarks, no file size limit beyond what your browser can handle, and no hidden charges.
Can I batch convert multiple BMP files to ICO?
Yes. Upload multiple BMP files at once — each is converted separately and you can download all results as a ZIP archive.
How long does BMP to ICO conversion take?
Image conversion is nearly instant — most files convert in under 1 second using the browser's Canvas API. Batch conversions of 10–20 files typically complete in 2–5 seconds.

About BMP (Bitmap Image File)

BMP is an uncompressed raster format that stores raw pixel data. Files are large but perfectly lossless and widely supported on Windows.

Learn more about BMP →

About ICO (Windows Icon Format)

ICO is the standard format for Windows application icons and browser favicons, supporting multiple resolutions in a single file.

Learn more about ICO →