MMegaConvert

Convert EXR to HDR

Free online EXR to HDR converter. No signup required.

Drag & drop your file here

or click to browse

Max file size: 100 MB

Advertisement

How to Convert EXR to HDR

Follow these simple steps to convert your file in seconds.

  1. 1

    Upload your .exr file

    Drag and drop your .exr file into the upload area, or click "Browse" to select it from your device. Your file is uploaded securely and processed on our servers.

  2. 2

    Click "Convert to HDR"

    Once your file is uploaded, press the convert button to start the EXR to HDR conversion process.

  3. 3

    Wait for the conversion to complete

    The conversion usually takes just a few seconds. You can see the progress in real time while your file is being processed.

  4. 4

    Download your converted .hdr file

    When the conversion is finished, click the download button to save your new .hdr file. The file is ready to use immediately.

Understanding EXR and HDR Formats

Learn about the source and target file formats to understand what happens during conversion.

Source Format

OpenEXR Image

image/x-exr

OpenEXR is a high dynamic range raster image format developed by Industrial Light & Magic for use in visual effects and motion picture production. It supports 16-bit and 32-bit floating-point pixels, multiple compression methods, arbitrary image channels, and multi-part files. OpenEXR is the industry standard for storing intermediate and final rendered frames in VFX pipelines.

Advantages

  • Industry-standard 16-bit and 32-bit floating-point precision for VFX work
  • Supports an arbitrary number of named channels and deep image data
  • Multiple lossless and lossy compression options including PIZ and DWAA

Limitations

  • Large file sizes even with compression, especially for 32-bit data
  • Not supported by web browsers or most consumer image viewers
  • Complex format specification requires specialized libraries to read and write

Common Uses

  • Visual effects compositing and intermediate renders in film production
  • 3D rendering output for lighting and shading passes
  • HDR image storage for professional color grading and post-production

Target Format

Radiance HDR Image

image/vnd.radiance

HDR (High Dynamic Range) Radiance format, also known as RGBE, stores images with a high dynamic range of luminance values using a run-length encoded format. Developed by Greg Ward for the Radiance lighting simulation system, it encodes each pixel as three 8-bit mantissas and a shared 8-bit exponent. HDR images capture a much wider range of brightness than standard 8-bit formats.

Advantages

  • Captures a wide dynamic range of lighting from very dark to very bright
  • Relatively compact encoding for high dynamic range data
  • Widely supported in 3D rendering, game engines, and compositing software

Limitations

  • Lower precision than 32-bit EXR for demanding visual effects work
  • Not suitable for direct display without tone mapping
  • Limited to RGB data with no alpha channel support

Common Uses

  • Environment maps and image-based lighting in 3D rendering
  • HDR photography merging and tone mapping workflows
  • Lighting simulation and architectural visualization

Frequently Asked Questions

Common questions about converting EXR to HDR.

Related Conversions

Explore other conversions related to EXR and HDR.

Advertisement