Convert HEIC to BMP — Uncompressed Output
BMP is an uncompressed raster format from the early Windows era. While it’s been largely replaced by modern formats, some legacy Windows applications, embedded systems, and industrial equipment still require BMP input. Converting iPhone HEIC photos to BMP makes them compatible with these specialized systems.
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HEIC, WEBP, AVIF, TIFF, BMP, SVG, GIF, PNG, JPG, PDF, CR2, NEF, ARW, DNG — up to 50MB each, or 50 from a folder
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Modern format with excellent compression. Limited browser support.
Apple's format. Excellent quality at small sizes.
Lossless format. Large files, ideal for print/archival.
256 colors max. Best for simple graphics.
Uncompressed bitmap. Very large files.
Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.
Same format? You might want to compress instead.
SSIM-optimized — finds the lowest file size at your chosen visual fidelity.
Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.
Resize tool → Live preview, percentage scaling, and dimension presets.
Tip: Use PNG or WebP for transparent output. Standalone tool →
Lossless format — files can be large
GIF is limited to 256 colors
Best for logos, icons, and line art. Photos produce stylized results.
BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.
Leave empty for all pages. Multi-page PDFs produce a ZIP.
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HEIC vs BMP Comparison
| Feature | HEIC | BMP |
|---|---|---|
| Full Name | High Efficiency Image Container | Bitmap Image File |
| Lossy Compression | ✅ | ❌ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ✅ | ❌ |
| Animation | ❌ | ❌ |
| Browser Support | Safari, iOS; limited elsewhere | Most browsers (legacy format) |
| Color Depth | 16.7M (24-bit) | 16.7M (24-bit) |
| Typical Use | iPhone/iPad photos (default since iOS 11) | Windows legacy, uncompressed images |
| Year Introduced | 2015 | 1986 |
Why Convert HEIC to BMP?
Legacy Windows software, embedded systems, and some industrial image processing equipment only accept BMP format. Because BMP is uncompressed, it provides raw pixel data that these systems can read without needing a decoder. For most other uses, PNG or JPG are far better choices due to their smaller file sizes.
How to Convert HEIC to BMP
Upload your HEIC file by dragging it into the converter or clicking to browse. Files up to 50 MB are supported.
KoalaPic decodes the HEIC image and saves it as an uncompressed 24-bit BMP file.
Download the BMP file. Both files are automatically deleted after 1 hour.
Quality Note
BMP is uncompressed, so there is zero additional quality loss beyond what HEIC already applied. However, the files are enormous — a 4000×3000 photo becomes approximately 36 MB as BMP. For most use cases, PNG (lossless, compressed) or JPG (small, good quality) are much better choices.