MMegaConvert

Convert BMP to ARW

Free online BMP to ARW converter. No signup required.

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Max file size: 100 MB

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How to Convert BMP to ARW

Follow these simple steps to convert your file in seconds.

  1. 1

    Upload your .bmp file

    Drag and drop your .bmp 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 ARW"

    Once your file is uploaded, press the convert button to start the BMP to ARW 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 .arw file

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

Understanding BMP and ARW Formats

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

Source Format

BMP Image

image/bmp

BMP (Bitmap) is an uncompressed or minimally compressed raster image format developed by Microsoft. It stores image data pixel by pixel with no quality loss, supporting color depths from 1-bit monochrome to 32-bit with alpha. BMP files are typically very large because most implementations store raw pixel data without compression.

Advantages

  • Completely lossless with no compression artifacts
  • Simple format that is fast to read and write
  • Native support in all Windows applications

Limitations

  • Very large file sizes due to lack of effective compression
  • Not suitable for web use due to excessive file sizes
  • Limited metadata support compared to modern formats

Common Uses

  • Windows system graphics and clipboard operations
  • Intermediate format in image processing pipelines
  • Legacy application compatibility

Target Format

Sony Raw Image

image/x-sony-arw

ARW (Alpha Raw) is Sony's proprietary raw image format used by Sony Alpha mirrorless and DSLR cameras. Based on the TIFF specification, it stores unprocessed 12-bit or 14-bit sensor data with complete metadata. ARW files can be either uncompressed or use Sony's lossy or lossless compressed raw encoding.

Advantages

  • Preserves full unprocessed sensor data for maximum post-processing latitude
  • Supports both compressed and uncompressed raw storage options
  • Well-supported by major photo editing applications including Lightroom and Capture One

Limitations

  • Proprietary format with no publicly available specification
  • Large file sizes, especially in uncompressed mode
  • Requires raw-capable software for viewing and editing

Common Uses

  • Professional photography with Sony Alpha series cameras
  • Raw photo editing and non-destructive development
  • High-quality archival of photographic captures

Frequently Asked Questions

Common questions about converting BMP to ARW.

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