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Convert RAS to CALS

Convert RAS images to CALS format, edit and optimize images online and free.

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Sun Raster (.ras)

The Sun Raster file extension, also known as RAS, is a bitmap graphics file format developed by Sun Microsystems for use on their SunOS operating system. It supports black-and-white, grayscale, and color images with various pixel depths and includes simple Run-Length Encoding (RLE) compression. The format was widely used in UNIX-based systems and is supported by many imaging applications. The RAS format has largely been superseded by more modern formats but remains relevant for legacy systems and specific use cases.

RAS Converter

Continuous Acquisition and Life-cycle Support Type 1 Image (.cals)

The CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image file format, developed by the United States Department of Defense in the mid-1980s, is a standard for storing raster (bit-mapped) image data, typically black-and-white. It ensures efficient data interchange and retention of orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images. This standard was part of the broader CALS initiative aimed at improving electronic publishing and data management within the federal government.

CALS Converter

How to convert RAS to CALS?

  1. Upload RAS File

    Drag & drop or browse your device to select and upload your RAS file.

  2. Select RAS Tools

    Use any available RAS to CALS tools on the preview page and click Convert.

  3. Download Your CALS

    Wait a few moments for the converter to complete its job, then download your CALS file.

Convert RAS to CALS

Frequently Asked Questions

How to change RAS format to CALS?

To change RAS format to CALS, upload your RAS file to proceed to the preview page. Use any available tools if you want to edit and manipulate your RAS file. Click on the convert button and wait for the convert to complete. Download the converted CALS file afterward.

Convert Files on Desktop

macOS
Windows
Linux

Convert RAS to CALS on macOS

Follow steps below if you have installed Vertopal CLI on your macOS system.

  1. Open macOS Terminal.
  2. Either cd to RAS file location or include path to your input file.
  3. Paste and execute the command below, substituting in your RAS_INPUT_FILE name or path. $ vertopal convert RAS_INPUT_FILE --to cals

Convert RAS to CALS on Windows

Follow steps below if you have installed Vertopal CLI on your Windows system.

  1. Open Command Prompt or Windows PowerShell.
  2. Either cd to RAS file location or include path to your input file.
  3. Paste and execute the command below, substituting in your RAS_INPUT_FILE name or path. $ vertopal convert RAS_INPUT_FILE --to cals

Convert RAS to CALS on Linux

Follow steps below if you have installed Vertopal CLI on your Linux system.

  1. Open Linux Terminal.
  2. Either cd to RAS file location or include path to your input file.
  3. Paste and execute the command below, substituting in your RAS_INPUT_FILE name or path. $ vertopal convert RAS_INPUT_FILE --to cals

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