Convert BMP to HDR
Convert BMP files to HDR locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert BMP to HDR
- Drop your .bmp files above, or click Upload Files. You can add many files at once.
- HDR is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .hdr files as soon as each one finishes.
What to know about BMP to HDR conversion
- HDR is best for HDR environment maps for lighting 3D scenes, and opens in Blender, 3D renderers and HDR viewers.
BMP vs HDR
| Feature | BMP (Bitmap Image File) | HDR (Radiance HDR) |
|---|---|---|
| Compression | uncompressed | lossless |
| Transparency | No | No |
| Animation | No | No |
| Best for | pixel-exact images for legacy Windows software | HDR environment maps for lighting 3D scenes |
| Opens in | Windows apps and most image editors | Blender, 3D renderers and HDR viewers |
BMP (Bitmap Image File): A classic uncompressed raster graphics format developed by Microsoft, preserving pixel-perfect quality.
HDR (Radiance HDR): A high-dynamic-range RGBE image format commonly used for environment maps and lighting in 3D rendering.
Conversion options
- Resize by width, height or both (aspect ratio is preserved)
- Filters: grayscale, sepia, blur and sharpen
- Custom output file name
Frequently asked questions
Is it safe to convert BMP to HDR here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several BMP files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert HDR to BMP.
Convert BMP to other formats
- BMP to JPG
- BMP to PNG
- BMP to PDF
- BMP to WEBP
- BMP to GIF
- BMP to SVG
- BMP to AVIF
- BMP to ICO
- BMP to TIFF
- BMP to JXL
- BMP to PSD
- BMP to TGA
Convert other formats to HDR
- JPG to HDR
- PNG to HDR
- PDF to HDR
- WEBP to HDR
- HEIC to HDR
- GIF to HDR
- SVG to HDR
- AVIF to HDR
- ICO to HDR
- TIFF to HDR
- JXL to HDR
- PSD to HDR
See every BMP converter and HDR converter, or browse the full converter directory.