ICO To BMP Converter
Convert your ICO icons to BMP format. Supports multi-size ICO files.
Drag & Drop ICO files here
or
Import an ICO file directly from a public URL, Google Drive, or Dropbox.
Max file size: 100MB
ℹ️ BMP files are uncompressed, so output size may be significantly larger.
Your images are processed securely. No files are uploaded or stored on our servers.
Convert ICO to BMP online without installing any software. This tool extracts the icon image from your ICO file and converts it into an uncompressed BMP (Bitmap Image File) - preserving exact pixel data for legacy software, technical workflows, and system-level image processing. ICO files are purpose-built for application icons and favicons, while BMP provides raw, uncompressed image storage that some older applications and Windows tools expect. If you need a modern, web-friendly format instead, our ICO to PNG converter is lossless with full transparency, and ICO to WebP gives you the smallest web-ready file. This free converter handles it all instantly in your browser.
BMP (Bitmap) is an uncompressed raster format developed by Microsoft that stores images with no quality loss and exact pixel accuracy. The trade-off is file size — BMP files are significantly larger than compressed formats like PNG or WebP. Transparency support in BMP is limited, so transparent areas in your ICO may be flattened to a solid background. BMP is most useful for legacy applications, Windows system workflows, and technical image processing pipelines that require raw pixel data. If you just need to reuse the icon artwork in a general context, PNG or JPG are more practical choices. Simply upload your ICO, convert, and download in seconds - no signup, no watermark.
Lightning Fast
Convert ICO files to BMP in seconds with our optimized engine that runs entirely in your browser - no uploads, no waiting.
Privacy First
No account needed. No data uploaded to servers. Your files stay on your device, processed locally in your browser.
Batch Processing
Convert multiple ICO files at once with a single click. Download results individually or as a ZIP archive.
Pixel-Accurate Output
BMP stores raw, uncompressed pixel data with exact accuracy — ideal for legacy software and technical workflows.
How It Works
Convert your ICO files to BMP in 4 simple steps. No sign-up required, no software to install.
Upload Your Files
Click to select or drag and drop your ICO files. You can also import from URL, Google Drive, or Dropbox.
Choose Settings
The largest icon resolution is extracted by default. Adjust scale options in the panel if you need a specific output size.
Convert Instantly
Processing happens entirely in your browser. No uploads, no server-side processing. 100% local and private.
Download Results
Get your converted BMP images individually or download all at once as a ZIP file. Ready in seconds.
Same Icon, Raw Pixel Format
Our converter extracts your icon with exact pixel accuracy and delivers an uncompressed BMP. Move your cursor across the image to compare - the visual output is the same. Only the format and file size change.
Converting ICO to BMP keeps the image visually identical while storing every pixel raw and uncompressed. This is why the BMP is significantly larger - no compression is applied at all. BMP is best suited for legacy software and technical workflows that require raw bitmap data. For everyday use, PNG gives you lossless quality at a much smaller size.
Convert ICO to BMP Online - Free & Secure
Easily convert your ICO icon files to BMP (Bitmap Image File) - right in your browser. ICO is a specialized container for system icons and favicons, while BMP stores raw, uncompressed pixel data widely used in legacy Windows applications and technical image workflows. Our tool extracts the icon at the largest available resolution and produces a pixel-accurate BMP with no compression artifacts. Note that BMP files are significantly larger than compressed formats - if you need a smaller output, our ICO to PNG converter gives lossless quality at a much smaller size. This free ICO to BMP converter is designed for legacy software, technical workflows, and Windows system compatibility.
⚖️ ICO vs BMP - Quick Comparison
| Feature | ICO (Icon File) | BMP (Bitmap Image File) |
|---|---|---|
| Primary Use | Application & system icons | Raw bitmap images |
| Compression | Minimal / icon-based | None |
| File Size | Small | Very large |
| Transparency | ✓ Supported | Limited |
| Pixel Accuracy | High | ✓ Exact |
| Best Use | Icons & favicons | Legacy & technical workflows |
In practice, ICO is the better choice when the file needs to function as a system icon or favicon. BMP is the better choice when a legacy application or technical pipeline specifically requires raw, uncompressed bitmap data - pixel-accurate output with no compression processing. BMP is not suitable for web use or everyday image sharing because of its very large file sizes and limited modern software support. For most everyday uses, PNG provides the same lossless quality at a fraction of the size, and WebP is smaller still for web use. Choose BMP only when your workflow explicitly requires it.
🎯 When to Use BMP
BMP is a specialized format suited to specific technical and legacy scenarios. Here are the cases where converting ICO to BMP is the right decision:
Legacy Windows Applications
Some older Windows desktop software, system tools, and resource editors specifically read BMP format. Converting ICO to BMP ensures the icon artwork is available in the exact format those older tools expect.
Technical Image Processing
Certain image processing pipelines, hardware imaging tools, and low-level graphics applications work with raw pixel data in BMP format. Uncompressed BMP provides exact pixel values with no lossy processing in between.
System-Level Graphics
Some Windows system interfaces, wallpaper tools, and older display configuration software work with BMP images. Converting an ICO to BMP makes the artwork directly compatible with these environments.
No Modern Codec Required
BMP requires no decoder library to read - it's a straightforward raw pixel dump that any basic image-reading code can parse. This makes it useful in embedded systems and constrained environments where modern codecs aren't available.
For everyday image needs, our ICO to PNG converter gives you lossless quality with transparency at a much smaller size. For web use, ICO to WebP is the modern choice.
📁 When to Keep ICO Instead
BMP is large and limited. Here's when not to convert and keep ICO or choose a better format:
Favicons & System Icons
For website favicons and application icons on Windows, keep ICO. BMP cannot serve as a system icon and won't be recognized by browsers or the OS in that role.
Web & Online Use
BMP files are far too large for web use - they would severely slow down page loads. For any web context, use WebP or PNG instead.
Storage Efficiency
BMP's lack of compression means files many times larger than PNG. If disk space matters, choose PNG for lossless quality at a fraction of the BMP size.
Need to create an ICO from a standard image? Our PNG to ICO converter and JPG to ICO converter can help. Explore everything in the image tools suite.
💎 Key benefits / Why convert ICO to BMP
Pixel-Accurate Output
BMP stores every pixel exactly as-is with no compression processing, giving you raw image data that's ideal for technical applications where compression artifacts are unacceptable.
Legacy Software Support
Older Windows tools, resource editors, and technical applications that predate modern image formats often work natively with BMP. Converting ensures compatibility with those environments.
No Codec Required
BMP is a simple raw format any basic image reader can parse without a decoder library, making it suitable for low-level systems and embedded environments.
Private & Local
Conversion runs entirely in your browser, so your files never leave your device. No uploads, no data collection - everything stays private from start to finish.
⚙️ Features of this tool
- ✓ Convert single or multiple ICO files at once - batch processing supported
- ✓ Uncompressed BMP output with pixel-accurate data
-
✓
Automatically extracts the largest icon image from each
ICOfile - ✓ Safe, private conversion - files never touch any server
- ✓ Output size may be significantly larger than input due to no compression
- ✓ Batch ZIP download: all converted BMPs bundled into a single archive
- ✓ Works on all modern browsers - Chrome, Edge, Firefox, Safari
- ✓ Mobile-friendly: responsive on phones, tablets, and desktops
-
✓
Import via
Computer,URL,Google Drive, orDropbox - ✓ Client-side only: all data stays in your browser. No server uploads, ever
📋 How to use (step-by-step)
-
Select your files
Click "Select File" or drag your ICO files into the drop zone. You can also import from
URL,Google Drive, orDropbox. - Review settings The largest icon resolution is extracted by default. Adjust scale options in the panel if you need a specific output dimension for your target application.
- Convert your files Click "Convert Images" to start. Each file is processed locally with real-time progress. Conversion takes only seconds.
-
Download your files
Download each BMP individually, or click "Download All (ZIP)" to get everything in a single
.zipfile. - Use in your workflow Open the BMP in your legacy software or technical pipeline. Note that BMP files are large - if you need a smaller file, consider PNG instead.
🔧 Technical notes (what to expect)
BMP stores every pixel raw with no compression, so output files are significantly larger than the source ICO - often many times bigger. This is expected behavior. If you need the same quality at a much smaller size, use PNG, which is lossless but compressed.
ICO files often contain multiple bundled sizes. The converter picks the largest available resolution by default for the highest fidelity BMP. If your target application needs a specific smaller size, adjust the scale setting before converting or resize afterward.
💡 Use cases / Examples
Developers using legacy Windows resource editors or system configuration tools that specifically require BMP format for image assets and icon artwork.
Technical imaging pipelines and hardware tools that consume raw pixel data in BMP format, where compression artifacts from other formats would be unacceptable.
Embedded systems and constrained environments that parse raw bitmap data without a modern image codec, where BMP's simple structure is an advantage.
🔗 Related Image Tools
This converter is part of our complete image tools suite. Here are the most commonly used tools alongside ICO to BMP conversion:
Built for Everyone in India
Whether you're working with legacy software, technical pipelines, or Windows system tools - this tool is for you.
FAQs - ICO To BMP Converter
What is an ICO file used for?
▼ICO files are used for application icons in Windows and website favicons displayed in browser tabs and shortcuts. They can store multiple image sizes in a single file so the system picks the right resolution for each context. Because ICO is a specialized container designed for system use rather than general image work, converting to BMP extracts the icon artwork as raw pixel data for use in legacy software and technical workflows.
Why would I convert ICO to BMP?
▼BMP is useful when uncompressed, pixel-accurate image data is required for legacy software or technical processing. Some older Windows tools, resource editors, and imaging pipelines specifically require BMP and don't work with modern compressed formats. For most everyday image uses, PNG gives the same lossless quality at a much smaller file size and is usually the better choice unless BMP is specifically required.
Does converting ICO to BMP preserve image quality?
▼Yes. BMP stores raw pixel data without compression, so image quality and detail are fully preserved during conversion. The output is pixel-accurate with no lossy artifacts. The trade-off is file size - BMP files are much larger than compressed formats because every pixel is stored individually with no size-reduction processing applied. For the same quality in a much smaller file, convert to PNG instead.
Is this ICO to BMP converter safe to use?
▼Yes. All uploaded files are processed securely in your browser and never sent to any server. Conversion happens entirely on your device using client-side JavaScript, so your files remain completely private. Because nothing is uploaded, the tool even works offline once the page has loaded, and there is zero data collection involved. Your icons and images stay yours from start to finish.
Can I convert multiple ICO files to BMP at once?
▼Yes. Batch conversion is supported, allowing multiple ICO files to be converted in one operation. Select or drag in all your files at once and convert them together. You can then download each BMP individually or grab them all bundled in a single ZIP archive. Because BMP output is large, converting many files at once may use significant browser memory, especially on lower-powered devices.
Why is my BMP file so much larger than the ICO?
▼BMP stores every pixel as raw data with no compression, while ICO uses minimal compression for icon-sized storage. As a result, the BMP output is significantly larger - often many times the size of the source ICO. This is normal and is the nature of the uncompressed format. If you need lossless quality at a much smaller file size, convert to PNG instead, which compresses efficiently without any quality loss.
Does BMP support transparency from my ICO?
▼Standard BMP has limited transparency support, so transparent areas from your ICO may be filled with a solid background in the output. If keeping transparency is important, convert to PNG or WebP instead - both fully support alpha channels and keep the icon's transparent background intact. BMP is better suited for workflows where transparency isn't a requirement and raw pixel data is the priority.
Are BMP files suitable for web use?
▼No. BMP files are far too large for web delivery, and most browsers don't handle them as inline images. They would severely slow down page loading. For web use, convert to WebP for the smallest modern format with transparency support, or PNG for broad compatibility. Reserve BMP strictly for legacy desktop applications and technical pipelines where the uncompressed format is specifically needed.
Can I use this converter on mobile devices?
▼Yes. The converter is fully responsive and works on smartphones, tablets, and desktop computers. The interface adapts to your screen size, and conversion runs locally in your device's browser. Because BMP output is uncompressed and large, processing many files on mobile may use more memory. For typical single-file conversions from icon-sized ICO files, it works quickly even on mobile.
Should I use BMP or PNG for lossless icon output?
▼PNG is the better lossless choice for most uses. Both BMP and PNG are lossless, but PNG uses efficient compression to produce much smaller files while keeping quality identical. BMP is only preferable when a specific tool or pipeline requires the raw uncompressed format. For editing, sharing, web use, or general archiving, PNG gives the same quality as BMP in a dramatically smaller, more compatible file.
Does the converter add a watermark to my BMP?
▼No. The converter never adds watermarks, logos, or any branding to your images. The output BMP contains only your icon's raw pixel data. There are also no usage limits, no sign-up requirements, and no hidden fees. You can convert as many ICO files to BMP as you like, as often as you like, and the results are entirely yours to use in your workflows.
Other Tool Categories
Image Tools
Convert, compress, and resize images in multiple formats - JPG, PNG, WebP, ICO, and more.
Salary Calculators
Calculate in-hand salary, CTC breakup, tax deductions, and more for Indian employees.
Unit Converters
Convert length, weight, temperature, speed, volume, and 200+ measurement units instantly.
Text Tools
Count words, convert case, generate lorem ipsum, find & replace text, and more writing utilities.
Start Converting Images
Convert your ICO files to uncompressed BMP images - free, private, and browser-based. No sign-up required.
🚀 Convert ICO to BMP