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Convert RAS to CAL

Convert RAS images to CAL 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 The RAS format has largely been superseded by more modern formats but remains relevant for legacy systems and specific use cases.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 (.cal)

The CAL file extension, known as CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image, is a 1-bit black-and-white raster image format developed by the U.S. Department of Defense in the mid-1980s to standardize graphics data interchange for military documentation. It is primarily used for storing and sharing monochrome images while retaining orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images.

CAL Converter

How to convert RAS to CAL?

  1. Upload RAS File

    Start uploading a RAS image by clicking the Choose File button or drag & dropping your RAS file.

  2. Select RAS Tools

    Check the file preview quickly and use RAS to CAL tools if you need to change the conversion settings.

  3. Download Your CAL

    Let the file convert, then you can download your CAL file right afterward.

Convert RAS to CAL

Frequently Asked Questions

How to change RAS format to CAL?

To change RAS format to CAL, 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 CAL file afterward.

Convert Files on Desktop

macOS
Windows
Linux

Convert RAS to CAL 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 cal

Convert RAS to CAL 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 cal

Convert RAS to CAL 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 cal

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