Convert.Guru

OCC Converter

Convert OCC files online for free


Drop or upload your .OCC file

How to convert your OCC file

  1. Click Select File above, and choose your OCC file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.


Convert OCC to another file type

The converter easily converts your OCC file to various formats—free and online. No Excel or extra software needed.

  • OCC to XLS
  • OCC to XLSX
  • OCC to XLSM
  • OCC to XLSB
  • OCC to ODS
  • OCC to CSV
  • OCC to TSV
  • OCC to TAB
  • OCC to DIF
  • OCC to SLK
  • OCC to WK1
  • OCC to WK3

Convert a file to OCC

The converter also works in reverse, allowing you to convert your file into the OCC file type—in the best quality.

  • WQ1 to OCC
  • XLSM to OCC
  • NOTES to OCC
  • QPW to OCC
  • WK3 to OCC
  • WB2 to OCC
  • WKS to OCC
  • XLSB to OCC
  • 123 to OCC
  • XLS to OCC
  • WB1 to OCC
  • XLSX to OCC

About OCC files

Open Office Calc (OCC) files are spreadsheet files used by the free and open source office suite, OpenOffice, and its derivatives, such as LibreOffice. OCC files store data in a tabular format, with rows and columns of cells containing text, numbers, and formulas. OCC files can be converted to other formats, such as Microsoft Excel's XLSX, using software such as LibreOffice or Apache OpenOffice. Additionally, OCC files can be converted to other formats using command line tools such as Python macros.

When converting OCC files, it is important to consider the formatting of the original file. OCC files may contain formatting that is not supported in other formats, such as cell background colors, font styles, and cell borders. Additionally, some formulas may not be supported in other formats, and may not be converted correctly. This can lead to errors in the converted file, which may require manual correction.

In addition to the potential formatting issues, OCC files may also be difficult to convert due to their large size. OCC files can become very large if they contain a large amount of data, and this can make conversion difficult. Additionally, OCC files may contain macros and other code that is not supported in other formats, and this can also lead to errors in the converted file.

Due to the potential issues with converting OCC files, it is often easier to use an online service such as Convert.Guru to convert them. Convert.Guru is free and easy to use, and it can quickly convert OCC files to other formats. Additionally, Convert.Guru can handle large files and complex formatting, and it can also convert OCC files to other formats such as PDF and HTML.


The OCC Converter Story

The history of Convert.Guru began more than 25 years ago in California, when Tom Simondi published the most comprehensive database of file formats on his website. Before that, Tom had worked on Space Shuttle development at the Air Force Systems Command’s Space Division in Los Angeles. He is known as one of the top programmers of the late 1980s.

When Microsoft integrated Tom’s Filext database into Windows XP, it became the leading platform for analyzing and processing file types and formats.

Today, we use the latest technologies to analyze, process, and convert one of the world's largest collections of file formats. We are committed to developing the best OCC converter by continuously improving quality, usability, and reliability.

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